WO2022168284A1 - 複合部材 - Google Patents
複合部材 Download PDFInfo
- Publication number
- WO2022168284A1 WO2022168284A1 PCT/JP2021/004418 JP2021004418W WO2022168284A1 WO 2022168284 A1 WO2022168284 A1 WO 2022168284A1 JP 2021004418 W JP2021004418 W JP 2021004418W WO 2022168284 A1 WO2022168284 A1 WO 2022168284A1
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- WO
- WIPO (PCT)
- Prior art keywords
- inorganic
- ferromagnetic material
- composite member
- inorganic matrix
- matrix portion
- Prior art date
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- 239000002131 composite material Substances 0.000 title claims abstract description 96
- 239000000126 substance Substances 0.000 claims abstract description 160
- 239000003302 ferromagnetic material Substances 0.000 claims abstract description 132
- 239000011159 matrix material Substances 0.000 claims abstract description 120
- 239000002245 particle Substances 0.000 claims abstract description 92
- 229910052751 metal Inorganic materials 0.000 claims abstract description 40
- 239000002184 metal Substances 0.000 claims abstract description 35
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 22
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 13
- 239000000956 alloy Substances 0.000 claims abstract description 13
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 11
- 230000005298 paramagnetic effect Effects 0.000 claims abstract description 8
- -1 metal oxide hydroxide Chemical class 0.000 claims description 12
- 239000000696 magnetic material Substances 0.000 claims description 8
- 230000005292 diamagnetic effect Effects 0.000 claims description 7
- 150000002739 metals Chemical class 0.000 claims description 3
- 230000001747 exhibiting effect Effects 0.000 claims description 2
- 230000005307 ferromagnetism Effects 0.000 claims description 2
- 229910010272 inorganic material Inorganic materials 0.000 abstract description 34
- 239000011147 inorganic material Substances 0.000 abstract description 11
- 229910021518 metal oxyhydroxide Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 44
- 239000002904 solvent Substances 0.000 description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 33
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 30
- 229910001593 boehmite Inorganic materials 0.000 description 28
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 28
- 238000012360 testing method Methods 0.000 description 26
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 24
- 150000002484 inorganic compounds Chemical class 0.000 description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 21
- 238000010438 heat treatment Methods 0.000 description 21
- 239000011148 porous material Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 18
- 230000006866 deterioration Effects 0.000 description 18
- 229910052760 oxygen Inorganic materials 0.000 description 18
- 239000001301 oxygen Substances 0.000 description 18
- 239000000843 powder Substances 0.000 description 18
- 230000005291 magnetic effect Effects 0.000 description 17
- 230000005484 gravity Effects 0.000 description 12
- 230000005389 magnetism Effects 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 12
- 230000005294 ferromagnetic effect Effects 0.000 description 11
- 239000011787 zinc oxide Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 238000002156 mixing Methods 0.000 description 10
- 239000007864 aqueous solution Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 7
- 229910000859 α-Fe Inorganic materials 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 6
- 238000006703 hydration reaction Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 5
- 150000001342 alkaline earth metals Chemical class 0.000 description 5
- 239000010953 base metal Substances 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 4
- 229910052783 alkali metal Inorganic materials 0.000 description 4
- 150000001340 alkali metals Chemical class 0.000 description 4
- 229940043430 calcium compound Drugs 0.000 description 4
- 150000001674 calcium compounds Chemical class 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000011812 mixed powder Substances 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 229910052723 transition metal Inorganic materials 0.000 description 4
- 150000003624 transition metals Chemical class 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 229910000828 alnico Inorganic materials 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 150000004677 hydrates Chemical class 0.000 description 3
- 150000004679 hydroxides Chemical class 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 235000012241 calcium silicate Nutrition 0.000 description 2
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000002889 diamagnetic material Substances 0.000 description 2
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000002907 paramagnetic material Substances 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229910002706 AlOOH Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 238000003991 Rietveld refinement Methods 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- AWWAHRLLQMQIOC-UHFFFAOYSA-N [Fe].[Sm] Chemical compound [Fe].[Sm] AWWAHRLLQMQIOC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229910052699 polonium Inorganic materials 0.000 description 1
- HZEBHPIOVYHPMT-UHFFFAOYSA-N polonium atom Chemical compound [Po] HZEBHPIOVYHPMT-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052705 radium Inorganic materials 0.000 description 1
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 235000019976 tricalcium silicate Nutrition 0.000 description 1
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 1
- 239000002672 zinc phosphate cement Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/12—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on oxides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/005—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing gelatineous or gel forming binders, e.g. gelatineous Al(OH)3, sol-gel binders
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B30/00—Compositions for artificial stone, not containing binders
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/453—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zinc, tin, or bismuth oxides or solid solutions thereof with other oxides, e.g. zincates, stannates or bismuthates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62625—Wet mixtures
- C04B35/6263—Wet mixtures characterised by their solids loadings, i.e. the percentage of solids
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
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- H01F1/342—Oxides
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Definitions
- the present invention relates to composite members.
- Magnets are used in various motors and electromagnetic relays used in home appliances, information equipment, and automobiles.
- Such magnets include, for example, ferrite magnets using barium ferrite or strontium ferrite, and rare earth magnets using rare earth metals such as samarium and neodymium.
- bonded magnets in which magnet powder is bonded with rubber or plastic.
- Patent Document 1 discloses a hydraulic composition-bonded magnet in which magnetic powder is held in a hydraulic composition obtained by curing hydraulic powder.
- the hydraulic composition includes a hydraulic powder that hardens with water such as Portland cement, a non-hydraulic powder that does not harden even when in contact with water, and a workability improver such as a thermoplastic resin. is used. It is described that such a hydraulic composition bonded magnet exhibits excellent corrosion resistance, heat resistance and high strength.
- Patent Document 1 which is obtained by hardening the hydraulic powder, has many pores because it is formed by a hydration reaction. As a result, the magnetic powder is likely to be oxidized when it comes into contact with oxygen, so there is a problem that the deterioration of the magnetic properties cannot be sufficiently prevented.
- the present invention has been made in view of such problems of the prior art. It is another object of the present invention to provide a composite member capable of suppressing deterioration of a ferromagnetic material and maintaining magnetic properties over a long period of time.
- a composite member according to an aspect of the present invention contains at least one of a metal oxide and a metal oxide hydroxide as a main component, does not substantially contain a single metal and an alloy, and is a diamagnetic material or An inorganic matrix portion made of a paramagnetic inorganic substance, and a ferromagnetic material portion made of a ferromagnetic material, which exists inside the inorganic matrix portion and directly adheres to the inorganic substance constituting the inorganic matrix portion. .
- the particles of the inorganic substance exist continuously, and the volume ratio of the inorganic matrix portion is larger than that of the ferromagnetic material portion.
- FIG. 1 is a perspective view schematically showing an example of a composite member according to this embodiment.
- FIG. 2(a) is a schematic diagram showing an enlarged cross section of the composite member according to the present embodiment.
- FIG. 2(b) is a cross-sectional view schematically showing the vicinity of the grain boundary of the inorganic substance particle group.
- FIG. 3 is a perspective view schematically showing another example of the composite member according to this embodiment.
- FIG. 4 is a cross-sectional view schematically showing another example of the composite member according to this embodiment.
- FIG. 5 is a cross-sectional view schematically showing another example of the composite member according to this embodiment.
- FIG. 6(a) is a diagram showing a secondary electron image at position 1 in the test sample of the example.
- FIG. 6(a) is a diagram showing a secondary electron image at position 1 in the test sample of the example.
- FIG. 6B is a diagram showing binarized data of the secondary electron image at position 1 in the test sample of the example.
- FIG. 7(a) is a diagram showing a secondary electron image at position 2 in the test sample of the example.
- FIG. 7B is a diagram showing binarized data of the secondary electron image at position 2 in the test sample of the example.
- FIG. 8(a) is a diagram showing a secondary electron image at position 3 in the test sample of the example.
- FIG. 8B is a diagram showing binarized data of the secondary electron image at position 3 in the test sample of the example.
- the composite member of the present embodiment includes an inorganic matrix portion 10, a ferromagnetic material portion 20 directly fixed to the inorganic matrix portion 10 without an adhesive substance different from the inorganic substance constituting the inorganic matrix portion 10, It has Specifically, the composite member 100 shown in FIG. 1 includes an inorganic matrix portion 10 made of an inorganic substance, and ferromagnetic material portions 20 present in a dispersed state inside the inorganic matrix portion 10. .
- the inorganic matrix portion 10 is composed of a plurality of particles 11 made of an inorganic substance, and the inorganic matrix portion 10 is formed by bonding the inorganic substance particles 11 to each other.
- the inorganic substance constituting the inorganic matrix portion 10 preferably contains at least one metal element selected from the group consisting of alkali metals, alkaline earth metals, transition metals, base metals and semi-metals.
- alkaline earth metals include beryllium and magnesium, in addition to calcium, strontium, barium and radium.
- Base metals include aluminum, zinc, gallium, cadmium, indium, tin, mercury, thallium, lead, bismuth and polonium.
- Metalloids include boron, silicon, germanium, arsenic, antimony and tellurium.
- the inorganic substance preferably contains at least one metal element selected from the group consisting of zinc, aluminum and magnesium. As will be described later, inorganic substances containing these metal elements can easily form joints derived from inorganic substances by a pressure heating method.
- the inorganic substance preferably contains at least one of oxides and oxide hydroxides of the above metal elements. Further, the inorganic substance more preferably contains at least one of oxides and oxide hydroxides of the metal element as a main component. That is, the inorganic substance preferably contains 50 mol % or more, more preferably 80 mol % or more, of at least one of the oxide and hydroxide oxide of the metal element.
- the oxides of metal elements described above include phosphates, silicates, aluminates and borates in addition to compounds in which only oxygen is bonded to metal elements.
- the inorganic substance constituting the inorganic matrix portion 10 is an oxide.
- the oxide of the metal element is preferably a compound in which only oxygen is bonded to the metal element.
- the inorganic matrix part 10 is preferably polycrystalline.
- the inorganic substance particles 11 are crystalline particles and that the inorganic matrix portion 10 is formed by agglomeration of a large number of particles 11 .
- the composite member 100 having a higher durability can be obtained than when the inorganic material is amorphous.
- the inorganic substance particles 11 are more preferably crystalline particles containing at least one metal element selected from the group consisting of alkali metals, alkaline earth metals, transition metals, base metals and semi-metals.
- the inorganic substance particles 11 are preferably crystalline particles containing at least one of oxides and oxide hydroxides of the metal element. More preferably, the inorganic substance particles 11 are crystalline particles whose main component is at least one of oxides and hydroxide oxides of the metal element.
- the inorganic substance constituting the inorganic matrix portion 10 is boehmite.
- Boehmite is an aluminum oxide hydroxide represented by the AlOOH composition formula. Boehmite is insoluble in water and hardly reacts with acids and alkalis at room temperature, so it has high chemical stability. Furthermore, boehmite has a high dehydration temperature of around 500° C., so it has excellent heat resistance. Moreover, since boehmite has a specific gravity of about 3.07, when the inorganic matrix portion 10 is made of boehmite, the composite member 100 can be lightweight and excellent in chemical stability.
- the particles 11 may be particles composed only of the boehmite phase, or particles composed of a mixed phase of boehmite and aluminum oxide or aluminum hydroxide other than boehmite. may be
- the particles 11 may be particles in which a boehmite phase and a gibbsite (Al(OH) 3 ) phase are mixed.
- the average particle diameter of the particles 11 of the inorganic substance forming the inorganic matrix portion 10 is not particularly limited.
- the average particle diameter of the particles 11 is preferably 300 nm or more and 50 ⁇ m or less, more preferably 300 nm or more and 30 ⁇ m or less, further preferably 300 nm or more and 10 ⁇ m or less, and 300 nm or more and 5 ⁇ m or less.
- the average particle size of the inorganic substance particles 11 is within this range, the particles 11 are strongly bonded to each other, and the strength of the inorganic matrix portion 10 can be increased.
- the average particle diameter of the inorganic substance particles 11 is within this range, the ratio of pores existing inside the inorganic matrix portion 10 is 20% or less, as will be described later. 20 deterioration can be suppressed.
- the value of "average particle size" is measured using an observation means such as a scanning electron microscope (SEM) or a transmission electron microscope (TEM), and several to several tens of fields of view. A value calculated as an average value of the particle diameters of the particles observed inside is adopted.
- the shape of the inorganic substance particles 11 is not particularly limited, but may be spherical, for example. Further, the particles 11 may be whisker-like (needle-like) particles or scale-like particles. Whisker-like particles or scale-like particles have a higher contact with other particles than spherical particles, and tend to improve the strength of the inorganic matrix portion 10 . Therefore, by using particles having such a shape as the particles 11, the strength of the entire composite member 100 can be increased. As the whisker-like particles 11, for example, particles containing at least one of zinc oxide (ZnO) and aluminum oxide ( Al2O3 ) can be used.
- ZnO zinc oxide
- Al2O3 aluminum oxide
- the inorganic substance forming the inorganic matrix portion 10 is preferably a diamagnetic substance or a paramagnetic substance. That is, the inorganic substance is preferably a paramagnetic substance that is weakly attracted to the direction of the magnetic field, or a diamagnetic substance that is weakly repelled to the direction of the magnetic field. If the inorganic material consists of a diamagnetic or paramagnetic material, the inorganic material exhibits little magnetism. Therefore, since the inorganic matrix portion 10 made of the inorganic substance also exhibits only slight magnetism, the composite member 100 can exhibit the magnetic properties resulting from the ferromagnetic material portion 20 .
- the inorganic substance constituting the inorganic matrix portion 10 more preferably contains at least one of a metal oxide and a metal oxide hydroxide as a main component. Therefore, the inorganic matrix part 10 also preferably contains at least one of a metal oxide and a metal oxide hydroxide as a main component. That is, the inorganic matrix part 10 preferably contains at least one of the metal oxide and the metal oxide hydroxide in an amount of 50 mol % or more, more preferably 80 mol % or more.
- the inorganic substance that constitutes the inorganic matrix portion 10 substantially does not contain an elemental metal or an alloy. Elemental metals and alloys are often less stable to atmospheric oxygen and water vapor than metal oxides and metal oxide hydroxides. Therefore, from the viewpoint of enhancing the stability of the inorganic matrix portion 10 itself and further suppressing the oxidation deterioration of the ferromagnetic material portion 20, the inorganic substance preferably does not substantially contain a single metal or an alloy.
- the phrase "the inorganic substance does not substantially contain a single metal or an alloy” means that the inorganic substance does not intentionally contain a single metal or an alloy. Therefore, when an inorganic substance contains a simple metal and/or an alloy as an unavoidable impurity, the condition that "the inorganic substance does not substantially contain a simple metal and an alloy" is satisfied.
- the inorganic substance constituting the inorganic matrix part 10 does not substantially contain a hydrate.
- the inorganic substance does not substantially contain hydrates means that the inorganic substance is not intentionally made to contain hydrates. Therefore, when a hydrate is mixed in an inorganic substance as an unavoidable impurity, the condition that "the inorganic substance does not substantially contain a hydrate" is satisfied. Since boehmite is a metal oxide hydroxide, it is not included in hydrates in the present specification.
- the inorganic substance constituting the inorganic matrix portion 10 does not contain a hydrate of a calcium compound.
- the calcium compounds referred to here are tricalcium silicate (alite, 3CaO.SiO2 ), dicalcium silicate ( belite , 2CaO.SiO2 ), calcium aluminate ( 3CaO.Al2O3 ), and calcium aluminoferrite. ( 4CaO.Al2O3.Fe2O3 ) and calcium sulfate ( CaSO4.2H2O ).
- the resulting composite member may have a porosity exceeding 20% in the cross section of the inorganic matrix portion. Therefore, the inorganic substance preferably does not contain the calcium compound hydrate.
- the inorganic substance constituting the inorganic matrix portion 10 preferably does not include phosphate cement, zinc phosphate cement, and calcium phosphate cement. By not including these cements in the inorganic material, it is possible to reduce the porosity of the resulting composite member to 20% or less.
- the composite member 100 has a ferromagnetic material portion 20 arranged inside the inorganic matrix portion 10 .
- the ferromagnetic material part 20 is made of a ferromagnetic material that is strongly attracted in the direction of the magnetic field.
- the inorganic substance forming the inorganic matrix portion 10 is a diamagnetic substance or a paramagnetic substance, the inorganic matrix portion 10 exhibits only slight magnetism. Therefore, by arranging the ferromagnetic material portion 20 which is a ferromagnetic body inside the inorganic matrix portion 10 , the composite member 100 can exhibit magnetic properties resulting from the ferromagnetic material portion 20 .
- the ferromagnetic material constituting the ferromagnetic material portion 20 is not particularly limited, but for example, iron, nickel, cobalt, gadolinium, alnico (Al--Ni--Co), samarium-cobalt (Sm--Co) alloy and neodymium-iron- Mention may be made of ferromagnets such as boron (Nd--Fe--B) alloys and ferrimagnets such as ferrite, Fe 3 O 4 , MnO.Fe 2 O 3 and BaO.6Fe 2 O 3 .
- the ferromagnetic material portion 20 preferably contains at least one of a hard magnetic material and a soft magnetic material.
- the hard magnetic material is not particularly limited as long as it has a large coercive force and is not easily demagnetized by an external magnetic field. Examples include alnico, ferrite, samarium-cobalt, neodymium-iron-boron, and samarium-iron. - Nitrogen and the like can be mentioned.
- the soft magnetic material is not particularly limited as long as it is a magnetic material that changes its magnetization in response to the direction and magnitude of an external magnetic field. Examples include iron, silicon iron, permalloy, iron-silicon-aluminum, permendur, Electromagnetic stainless steel and the like can be mentioned.
- the ferromagnetic material part 20 contains a metal exhibiting ferromagnetism.
- metals include iron, nickel and cobalt.
- the shape of the ferromagnetic material portion 20 arranged inside the inorganic matrix portion 10 is not particularly limited.
- ferromagnetic material portion 20 may be particulate. Since the ferromagnetic material portion 20 is particulate, it is possible to disperse the ferromagnetic material portion 20 throughout the interior of the inorganic matrix portion 10 .
- the composite member 100A shown in FIG. Since the ferromagnetic material portion 20 is in the form of a block, it becomes possible to dispose the ferromagnetic material portion 20 at a predetermined position inside the inorganic matrix portion 10, for example.
- the inorganic matrix part 10 is preferably composed of a particle group of an inorganic substance.
- the inorganic matrix portion 10 is preferably composed of a plurality of particles 11 made of an inorganic substance, and the inorganic matrix portion 10 is formed by bonding the inorganic substance particles 11 to each other.
- the particles 11 may be in a state of point contact, or may be in a surface contact state in which the particle surfaces of the particles 11 are in contact with each other.
- the ferromagnetic material portions 20 exist in a substantially uniformly dispersed state inside the inorganic matrix portion 10 .
- the ferromagnetic material portion 20 exists at the grain boundary of the inorganic substance particles 11 . As shown in FIG. 2 , the ferromagnetic material portions 20 are unevenly distributed between adjacent inorganic substance particles 11 , so that the ferromagnetic material portions 20 are dispersed so as to fill the gaps between the inorganic substance particles 11 . Therefore, it is possible to further reduce the ratio of pores existing inside the inorganic matrix portion 10 .
- the ferromagnetic material portion 20 may be present between the adjacent inorganic substance particles 11.
- an amorphous portion 30 containing an amorphous inorganic compound may exist between adjacent inorganic substance particles 11 in addition to the ferromagnetic material portion 20 . Due to the presence of the amorphous portion 30, adjacent inorganic substance particles 11 are bonded to each other through the amorphous portion 30, so that the strength of the inorganic matrix portion 10 can be further increased.
- the amorphous portion 30 preferably exists so as to be in contact with at least the surface of the inorganic substance particles 11 .
- the amorphous portion 30 exists between the inorganic substance particles 11 and the ferromagnetic material portion 20 and between the adjacent ferromagnetic material portions 20 in addition to between the adjacent inorganic substance particles 11 .
- the amorphous part 30 preferably contains an amorphous inorganic compound.
- the amorphous portion 30 may be a portion composed only of an amorphous inorganic compound, or may be a portion composed of a mixture of an amorphous inorganic compound and a crystalline inorganic compound.
- the amorphous portion 30 may be a portion in which a crystalline inorganic compound is dispersed inside an amorphous inorganic compound.
- the inorganic substance particles 11 and the amorphous portion 30 contain the same metal element, and the metal element is preferably at least one selected from the group consisting of alkali metals, alkaline earth metals, transition metals, base metals and semi-metals. . That is, it is preferable that the inorganic compound forming the particles 11 and the amorphous inorganic compound forming the amorphous portion 30 contain at least the same metal element. Further, the inorganic compound forming the particles 11 and the amorphous inorganic compound forming the amorphous portion 30 may have the same chemical composition, or may have different chemical compositions.
- both the inorganic compound forming the particles 11 and the amorphous inorganic compound forming the amorphous portion 30 may be zinc oxide (ZnO).
- the inorganic compound forming the particles 11 is ZnO
- the amorphous inorganic compound forming the amorphous portion 30 may be a zinc-containing oxide other than ZnO.
- the amorphous portion 30 is a portion in which an amorphous inorganic compound and a crystalline inorganic compound are mixed
- the amorphous inorganic compound and the crystalline inorganic compound may have the same chemical composition. , and may differ from each other in chemical composition.
- the particles 11 and the amorphous portion 30 preferably contain an oxide of at least one metal element selected from the group consisting of alkali metals, alkaline earth metals, transition metals, base metals and semi-metals. Since such an oxide of a metal element has high durability, it is possible to suppress contact between the ferromagnetic material portion 20 and oxygen and water vapor over a long period of time, thereby suppressing deterioration of the ferromagnetic material portion 20. .
- the metal element oxide contained in both the particles 11 and the amorphous portion 30 is preferably at least one selected from the group consisting of zinc oxide, magnesium oxide, and a composite of zinc oxide and magnesium oxide. As will be described later, by using oxides of these metal elements, the amorphous portion 30 can be formed by a simple method.
- the inorganic substance forming the inorganic matrix portion 10 may be boehmite.
- the particles 11 of the inorganic matrix portion 10 may be particles composed only of the boehmite phase, or particles composed of a mixed phase of boehmite and aluminum oxide or aluminum hydroxide other than boehmite.
- adjacent particles 11 are preferably bonded via at least one of aluminum oxide and oxide hydroxide. That is, it is preferable that the particles 11 are not bound by an organic binder made of an organic compound, and not bound by an inorganic binder made of an inorganic compound other than aluminum oxides and hydroxide oxides. Note that when the adjacent particles 11 are bonded through at least one of aluminum oxide and oxide hydroxide, the aluminum oxide and oxide hydroxide may be crystalline, or non-crystalline. It may be crystalline.
- the abundance of the boehmite phase is preferably 50% by mass or more, more preferably 60% by mass or more, and even more preferably 70% by mass or more.
- the ratio of the boehmite phase in the inorganic matrix portion 10 can be obtained by measuring the X-ray diffraction pattern of the inorganic matrix portion 10 by an X-ray diffraction method and then performing Rietveld analysis.
- the ferromagnetic material portion 20 made of a ferromagnetic material is arranged inside the inorganic matrix portion 10 .
- the inorganic matrix portion 10 is made of an inorganic material containing at least one of metal oxides and metal oxide hydroxides as a main component. Metal oxides and metal oxide hydroxides are highly stable to atmospheric oxygen and water vapor. Therefore, when the inorganic substance of the inorganic matrix portion 10 is composed of a metal oxide and a metal oxide hydroxide, the oxygen permeability of the inorganic matrix portion 10 is lowered and the gas barrier property is improved.
- the inorganic substance is a diamagnetic substance or a paramagnetic substance
- the inorganic matrix portion 10 exhibits only slight magnetism. Therefore, the composite member 100 can exhibit magnetic properties resulting from the ferromagnetic material portion 20 .
- the inorganic substance particles 11 are continuously present. That is, as shown in FIG. 2 , in the inorganic matrix portion 10 , the inorganic substance particles 11 are preferably in contact with each other and connected to each other, or preferably connected to each other via the amorphous portion 30 .
- the entire surface of ferromagnetic material portion 20 is preferably covered with inorganic matrix portion 10 .
- the volume ratio of the inorganic matrix portion 10 is preferably larger than that of the ferromagnetic material portion 20.
- the ferromagnetic material portion 20 can be easily covered with the inorganic particles 11 . Therefore, from the viewpoint of further suppressing deterioration of the ferromagnetic material portion 20 , it is preferable that the volume ratio of the inorganic matrix portion 10 is larger than that of the ferromagnetic material portion 20 .
- the cross-sectional porosity of the inorganic matrix portion 10 is preferably 20% or less. That is, when observing the cross section of the inorganic matrix portion 10, the average value of the ratio of pores per unit area is preferably 20% or less. If the porosity is 20% or less, the ferromagnetic material portion 20 can be sealed inside the dense inorganic substance. Therefore, since the contact ratio between oxygen and water vapor from the outside of the composite member 100 and the ferromagnetic material portion 20 is reduced, oxidation of the ferromagnetic material portion 20 is suppressed, and the ferromagnetic material portion 20 is maintained for a long period of time.
- the inorganic matrix portion 10 has few internal pores and the inorganic substance is dense, so the composite member 100 can have high strength.
- the cross-sectional porosity of the inorganic matrix portion 10 is preferably 15% or less, more preferably 10% or less, and even more preferably 5% or less. As the cross-sectional porosity of the inorganic matrix portion 10 is smaller, contact between the ferromagnetic material portion 20 and oxygen and water vapor is suppressed, so deterioration of the ferromagnetic material portion 20 can be prevented.
- the porosity can be obtained as follows. First, the cross section of the inorganic matrix portion 10 is observed to identify the inorganic matrix portion 10, the ferromagnetic material portion 20, and the pores. Then, the unit area and the area of pores in the unit area are measured to obtain the ratio of pores per unit area. After obtaining the ratio of pores per unit area at a plurality of locations, the average value of the ratio of pores per unit area is taken as the porosity. An optical microscope, a scanning electron microscope (SEM), or a transmission electron microscope (TEM) can be used to observe the cross section of the inorganic matrix portion 10 . Also, the unit area and the area of pores in the unit area may be measured by binarizing the image observed with a microscope.
- SEM scanning electron microscope
- TEM transmission electron microscope
- the shape of the composite member 100 is not particularly limited, it can be plate-shaped, for example.
- the thickness t of the composite member 100 is not particularly limited, but can be, for example, 50 ⁇ m or more. As will be described later, since the composite member 100 is formed by the pressure heating method, the composite member 100 having a large thickness can be easily obtained.
- the thickness t of the composite member 100 can be 1 mm or more, and can be 1 cm or more.
- the upper limit of the thickness t of the composite member 100 is not particularly limited, it can be set to 50 cm, for example.
- the ferromagnetic material portion 20 does not exist continuously from the surface 10a of the inorganic matrix portion 10 to the inside thereof, and does not exist in the form of a film on the surface 10a of the inorganic matrix portion 10.
- the ferromagnetic material portion 20a existing on the surface 10a of the inorganic matrix portion 10 may contact oxygen and water vapor in the atmosphere and deteriorate.
- the ferromagnetic material portion 20a continuously existing from the surface 10a of the inorganic matrix portion 10 to the inside may also deteriorate due to oxidation deterioration of the ferromagnetic material portion 20a existing on the surface 10a.
- the ferromagnetic material part 20 does not exist continuously from the surface 10a to the inside, and does not exist in the form of a film on the surface 10a.
- the inorganic matrix portion 10 preferably does not have voids 10b communicating from the surface 10a of the inorganic matrix portion 10 to the inside. Since the ferromagnetic material portion 20 inside the inorganic matrix portion 10 is covered with the particles 11 of the inorganic substance, it is difficult to deteriorate due to oxidation. However, as shown in FIG. 5, when voids 10b exist in the inorganic matrix portion 10, oxygen and water vapor reach the interior of the inorganic matrix portion 10 through the voids 10b, and the ferromagnetic material inside the inorganic matrix portion 10 There is a possibility of contact with the part 20. Therefore, from the viewpoint of suppressing oxidative deterioration of the ferromagnetic material portion 20, it is preferable that the inorganic matrix portion 10 does not have voids 10b communicating from the surface 10a to the inside.
- the composite members 100 and 100A of the present embodiment contain at least one of a metal oxide and a metal oxide hydroxide as a main component, do not substantially contain an elemental metal and an alloy, and are diamagnetic or paramagnetic.
- An inorganic matrix portion 10 made of an inorganic substance is provided.
- the composite member 100, 100A further includes a ferromagnetic material portion 20 that exists inside the inorganic matrix portion 10, directly adheres to the inorganic substance that constitutes the inorganic matrix portion 10, and is made of a ferromagnetic material.
- the inorganic substance particles 11 are continuously present, and the inorganic matrix portion 10 has a larger volume ratio than the ferromagnetic material portion 20 .
- the ferromagnetic material portion 20 is arranged inside the inorganic matrix portion 10 . Therefore, the inorganic matrix portion 10 suppresses contact between the ferromagnetic material portion 20 and oxygen and water vapor, thereby suppressing deterioration of the ferromagnetic material portion 20 and maintaining magnetic properties for a long period of time. .
- the constituent materials were limited to specific ceramics. That is, for ferrite magnets, for example, the constituent material is limited to specific ferrite. For this reason, since the constituent materials are limited, there is a problem that it is difficult to arbitrarily adjust the properties of the magnetic material such as thermal conductivity, hardness and strength.
- the inorganic matrix portion 10 described above is used as the matrix of the ferromagnetic material portion 20 . Therefore, by adjusting the constituent material of the inorganic matrix portion 10, the properties of the composite members 100, 100A such as thermal conductivity, hardness and strength can be arbitrarily adjusted.
- the composite member can be manufactured by pressurizing and heating a mixture of particles of an inorganic substance and a ferromagnetic material constituting the ferromagnetic material portion 20 while containing a solvent.
- the inorganic substances are bonded to each other, so that the inorganic matrix portion 10 in which the ferromagnetic material portions 20 are dispersed can be formed.
- the method of mixing the inorganic powder and the ferromagnetic powder is not particularly limited, and may be dry or wet.
- the inorganic powder and the ferromagnetic powder may be mixed in air or in an inert atmosphere.
- the solvent is not particularly limited, for example, a solvent capable of partially dissolving the inorganic substance when the mixture is pressurized and heated can be used.
- a solvent a solvent that can react with an inorganic substance to produce an inorganic substance different from the inorganic substance can be used.
- a solvent at least one selected from the group consisting of acidic aqueous solutions, alkaline aqueous solutions, water, alcohols, ketones and esters can be used.
- the acidic aqueous solution an aqueous solution with a pH of 1 to 3 can be used.
- an alkaline aqueous solution an aqueous solution with a pH of 10 to 14 can be used.
- the acidic aqueous solution it is preferable to use an aqueous solution of an organic acid.
- the alcohol it is preferable to use an alcohol having 1 to 12 carbon atoms.
- the inside of the mold is filled with a mixture containing an inorganic substance, a ferromagnetic substance, and a solvent.
- the mold may be heated as necessary.
- the inside of the mold becomes a high pressure state.
- the inorganic substance and the ferromagnetic substance are densified, and at the same time, the particles of the inorganic substance are bonded to each other.
- the inorganic compound that constitutes the inorganic substance dissolves in the solvent under high pressure.
- the dissolved inorganic compound penetrates the voids between the inorganic material and the ferromagnetic material, the voids between the inorganic material, and the voids between the ferromagnetic materials.
- connecting portions derived from the inorganic substance are formed between the inorganic substance and the ferromagnetic substance, between the inorganic substance and between the ferromagnetic substance.
- the inorganic compound that constitutes the inorganic substance reacts with the solvent under high pressure. Then, another inorganic substance generated by the reaction is filled in the gap between the inorganic substance and the ferromagnetic material, the gap between the inorganic substance, and the gap between the ferromagnetic substance, and is derived from the other inorganic substance. A joint is formed.
- the heating and pressurizing conditions for a mixture containing an inorganic substance, a ferromagnetic substance, and a solvent should be such that the surface of the inorganic substance dissolves when a solvent that partially dissolves the inorganic substance is used. is not particularly limited.
- the heating and pressurizing conditions for the mixture are such that when a solvent that reacts with an inorganic substance to produce an inorganic substance different from the inorganic substance is used as the solvent, the reaction between the inorganic substance and the solvent proceeds. There are no particular limitations as long as the conditions are met.
- a mixture containing an inorganic substance, a ferromagnetic material and a solvent at a pressure of 10 to 600 MPa after heating the mixture to 50 to 300°C.
- the temperature at which the mixture containing the inorganic substance, the ferromagnetic material and the solvent is heated is more preferably 80 to 250.degree. C., more preferably 100 to 200.degree.
- the pressure when pressurizing the mixture containing the inorganic substance, the ferromagnetic material and the solvent is more preferably 50 to 400 MPa, further preferably 50 to 200 MPa.
- a composite member can be obtained by taking out the molded body from the inside of the mold. It is preferable that the connecting portion derived from the inorganic substance formed between the inorganic substance and the ferromagnetic material portion 20, between the inorganic substance, and between the ferromagnetic material portion 20 is the amorphous portion 30 described above. .
- the composite member 100A shown in FIG. 3, in which the ferromagnetic material portion 20 is in the form of a lump, can also be manufactured by the same method as described above. Specifically, first, the powder of the inorganic substance and the block-shaped ferromagnetic material forming the ferromagnetic material portion 20 are filled in the mold. Then, a solvent is injected into the inside of the mold to permeate the powder of the inorganic substance with the solvent. Then, in the same manner as described above, the composite member 100A can be obtained by heating and pressurizing a mixture containing an inorganic substance, a ferromagnetic substance, and a solvent.
- the sintering method is conventionally known as a method for manufacturing inorganic members made of ceramics.
- the sintering method is a method of obtaining a sintered body by heating an aggregate of solid powder made of an inorganic substance at a temperature lower than the melting point.
- the solid powder is heated to, for example, 1000° C. or higher. Therefore, when an attempt is made to obtain a composite member composed of an inorganic substance and a magnetized ferromagnetic material using the sintering method, the ferromagnetic material is demagnetized by heating at a high temperature. I can't get the parts.
- the ferromagnetic material transitions to a paramagnetic material and is demagnetized or demagnetized, so that a composite member having magnetism cannot be obtained.
- the mixture obtained by mixing the inorganic substance powder and the ferromagnetic material constituting the ferromagnetic material portion 20 is heated at a low temperature of 300° C. or less. Therefore, since the Curie temperature of the ferromagnetic material constituting the ferromagnetic material portion 20 is not exceeded, a composite member having magnetism can be efficiently obtained. Further, since the mixture of the powder of the inorganic substance and the ferromagnetic material is heated at a low temperature, the composition of the ferromagnetic material hardly changes. Therefore, the composite member can obtain magnetic properties resulting from the ferromagnetic material portion 20 .
- the mixture obtained by mixing the powder of the inorganic substance and the ferromagnetic material is pressed while being heated, so that the inorganic substance aggregates to form the dense inorganic matrix portion 10. .
- the number of pores inside the inorganic matrix portion 10 is reduced, it is possible to obtain a composite member having high strength while suppressing oxidation deterioration of the ferromagnetic material portion 20 .
- a composite member in which the inorganic substance constituting the inorganic matrix portion 10 is boehmite can be produced by mixing hydraulic alumina, a ferromagnetic material constituting the ferromagnetic material portion 20, and a solvent containing water, and then heating under pressure.
- Hydraulic alumina is an oxide obtained by heat-treating aluminum hydroxide and contains ⁇ -alumina. Such hydraulic alumina has the property of binding and hardening through a hydration reaction. Therefore, by using the pressurized heating method, the hydration reaction of the hydraulic alumina proceeds and the hydraulic alumina bonds with each other, and the crystal structure changes to boehmite, thereby forming the inorganic matrix portion 10. can be done.
- the solvent containing water is preferably pure water or ion-exchanged water.
- the solvent containing water may contain an acidic substance or an alkaline substance in addition to water.
- the solvent containing water may contain water as a main component, and may contain, for example, an organic solvent (for example, alcohol).
- the amount of solvent added to the hydraulic alumina is preferably an amount that allows the hydration reaction of the hydraulic alumina to proceed sufficiently.
- the amount of solvent to be added is preferably 20 to 200% by mass, more preferably 50 to 150% by mass, relative to the hydraulic alumina.
- the inside of the mold is filled with a mixture obtained by mixing hydraulic alumina, a ferromagnetic material, and a solvent containing water.
- the mold may be heated as necessary.
- the inside of the mold becomes a high pressure state.
- the hydraulic alumina is highly packed, and the particles of the hydraulic alumina are bonded to each other to increase the density.
- the hydraulic alumina undergoes a hydration reaction to form boehmite and aluminum hydroxide on the surface of the hydraulic alumina particles.
- the conditions for heating and pressurizing the mixture obtained by mixing the hydraulic alumina, the ferromagnetic material, and the solvent containing water are not particularly limited as long as the reaction between the hydraulic alumina and the solvent proceeds.
- the temperature when heating the mixture obtained by mixing the hydraulic alumina, the ferromagnetic material, and the solvent containing water is more preferably 80 to 250°C, more preferably 100 to 200°C. .
- the pressure when pressurizing the mixture obtained by mixing the hydraulic alumina, the ferromagnetic material and the water-containing solvent is more preferably 50 to 600 MPa, further preferably 200 to 600 MPa.
- the method of manufacturing a composite member includes a step of mixing powder of an inorganic substance and a ferromagnetic substance constituting the ferromagnetic material portion 20 to obtain a mixture; adding a solvent to the mixture and then pressurizing and heating the mixture.
- the mixture is preferably heated and pressurized at a temperature of 50 to 300° C. and a pressure of 10 to 600 MPa.
- the composite member is molded under such low temperature conditions, even when a pre-magnetized ferromagnetic material is used as the ferromagnetic material portion 20, demagnetization of the ferromagnetic material is suppressed. By doing so, a composite member having magnetism can be obtained. Further, when a ferromagnetic material that has been magnetized in advance is used as the ferromagnetic material portion 20, the step of magnetizing the obtained composite member becomes unnecessary. Therefore, a magnetizing device such as a coil, which is necessary for magnetizing the composite member, becomes unnecessary, and the manufacturing process can be simplified.
- a method for manufacturing a composite member in which the inorganic substance is boehmite includes steps of mixing hydraulic alumina, a ferromagnetic material constituting the ferromagnetic material portion 20, and a solvent containing water to obtain a mixture; and a step of applying pressure and heating.
- the mixture is preferably heated and pressurized at a temperature of 50 to 300° C. and a pressure of 10 to 600 MPa.
- the composite member is molded under low temperature conditions, the obtained member is mainly composed of the boehmite phase. Therefore, a composite member which is lightweight and has excellent chemical stability can be obtained by a simple method.
- the composite members 100 and 100A have magnetism, high mechanical strength, and can be formed in a plate shape with a large thickness, so that they can be used for structures.
- the structures including the composite members 100 and 100A are preferably housing equipment, housing members, building materials, and buildings. Since housing equipment, housing materials, building materials and structures are structures that are in high demand in people's lives, the use of composite members 100 and 100A in structures is expected to create a large new market. be able to.
- the composite members 100, 100A of this embodiment can be used as building members.
- a building member is a member manufactured for construction, and in this embodiment, the composite member 100, 100A can be used for at least a part thereof.
- the composite members 100 and 100A can have a plate shape with a large thickness, and have high strength and durability. Therefore, the composite member 100, 100A can be suitably used as a building member.
- building members include exterior wall materials (siding) and roof materials.
- materials for roads and materials for outer grooves can also be mentioned as construction members.
- composite members 100 and 100A of this embodiment can also be used for interior members.
- interior members include bathtubs, kitchen counters, washbasins, and floor materials.
- composite members 100 and 100A according to this embodiment can also be used for various structures that utilize magnetism. Examples of such structures include electromagnetic shields and noise filters. Furthermore, the composite member 100, 100A can also be used for various devices using magnetism. Examples of such devices include sensors, communication devices, and electronic devices.
- test sample As an inorganic substance, zinc oxide particles (manufactured by Kojundo Chemical Laboratory Co., Ltd., purity 99.99%) having an average particle diameter D50 of about 1 ⁇ m were prepared. As a ferromagnetic material, iron powder (manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd.) having a particle size of 90% or more passing through a 45 ⁇ m filter was prepared. Then, after weighing the iron powder so as to be 12.5% by volume with respect to the zinc oxide particles, the zinc oxide particles and the iron powder are mixed using an agate mortar and pestle to obtain a mixed powder. Obtained.
- the obtained mixed powder was put into a cylindrical molding die ( ⁇ 10) having an internal space. Furthermore, 1M acetic acid was added to the mixed powder filled in the molding die so as to be 40% by mass with respect to the zinc oxide particles. Then, the test sample of this example was obtained by heating and pressurizing the mixed powder containing the acetic acid under the conditions of 100 MPa, 150° C., and 30 minutes.
- Table 1 summarizes the amount of iron powder added in the test samples of Examples and Comparative Examples.
- the pore portions were clarified by binarizing the inorganic matrix portion 10 of the SEM images of the three fields of view.
- the binarized images of the inorganic matrix portion 10 of the secondary electron images of FIGS. 6(a), 7(a) and 8(a) are shown in FIGS. (b).
- the area ratio of the pore portion was calculated from the binarized image, and the average value was taken as the porosity. Specifically, from FIG. 6(b), the area ratio of the pore portion at position 1 was 10.0%. From FIG. 7(b), the area ratio of the pore portion at position 2 was 10.2%. From FIG. 8B, the area ratio of the pore portion at position 3 was 11.0%. Therefore, the porosity of the test sample of Example was 10.4%, which is the average value of the area ratio of the pore portions at positions 1 to 3.
- the porosity of the test samples of the examples is 20% or less, so the iron powder, which is the ferromagnetic material part, is suppressed from contact with the air and water vapor, and oxidation deterioration is suppressed. It is understood that
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Abstract
Description
本実施形態の複合部材は、無機マトリックス部10と、無機マトリックス部10を構成する無機物質とは異なる接着物質を介することなく、無機マトリックス部10と直接固着している強磁性材料部20と、を備えている。具体的には、図1に示す複合部材100は、無機物質によって構成される無機マトリックス部10と、無機マトリックス部10の内部に分散した状態で存在する強磁性材料部20と、を備えている。
次に、本実施形態に係る複合部材の製造方法について説明する。複合部材は、無機物質の粒子と強磁性材料部20を構成する強磁性体との混合物を、溶媒を含んだ状態で加圧して加熱することにより製造することができる。このような加圧加熱法を用いることにより、無機物質同士が互いに結合するため、強磁性材料部20が内部に分散した無機マトリックス部10を形成することができる。
次に、本実施形態に係る複合部材100,100Aの用途について説明する。複合部材100,100Aは、上述のように、磁性を有し、機械的強度が高く、さらに厚みの大きな板状とすることができることから、構造物に用いることができる。そして、複合部材100,100Aを備える構造物としては、住宅設備、住宅部材、建材、建造物であることが好ましい。住宅設備、住宅部材、建材及び建造物は、人の生活の中で需要が多い構造物であることから、複合部材100,100Aを構造物に用いることにより、新しい大きな市場の創出効果を期待することができる。
(実施例)
無機物質として、平均粒子径D50が約1μmの酸化亜鉛粒子(株式会社高純度化学研究所製、純度99.99%)を準備した。また、強磁性体として、45μmフィルター通過分が90%以上の粒度である鉄粉(富士フイルム和光純薬株式会社製)を準備した。そして、酸化亜鉛粒子に対して12.5体積%となるように鉄粉を秤量した後、酸化亜鉛粒子と鉄粉とを、メノウ製の乳鉢と乳棒を用いて混合することにより、混合粉末を得た。
鉄粉を添加しなかったこと以外は実施例と同様にして、本例の試験サンプルを得た。
(密度割合測定)
まず、各例の試験サンプルの体積と質量から比重を求めた。さらに、酸化亜鉛の比重が5.6であり、鉄の比重が7.87であることから、各試験サンプルの理論比重を求めた。つまり、実施例の試験サンプルの場合、酸化亜鉛の体積割合が87.5%であり、鉄粉の体積割合が12.5%であることから、理論比重は、5.6×0.875+7.87×0.125=5.88である。そして、理論比重に対する実際の比重([実際の比重]/[理論比重]×100)を密度割合(%)とした。各試験サンプルの密度割合を表1に合わせて示す。
実施例及び比較例の試験サンプルに、フェライト磁石を近づけて、試験サンプルが磁石に引き寄せられるか否かを調べた。その結果、実施例の試験サンプルは磁石に引き寄せられるが、比較例の試験サンプルは、磁石を近づけても引き寄せられることも、反発することも無かった。そのため、実施例の試験サンプルは、強磁性材料部に起因する磁性を有することが分かる。
まず、円柱状である実施例の試験サンプルの断面に、クロスセクションポリッシャー加工(CP加工)を施した。次に、走査型電子顕微鏡(SEM)を用い、試験サンプルの断面について、20000倍の倍率で二次電子像を観察した。実施例の試験サンプルにおける断面の3か所(位置1~3)を観察することにより得られた二次電子像を、図6(a)、図7(a)及び図8(a)に示す。観察した二次電子像において、灰色部が酸化亜鉛(無機物質の粒子11)または鉄粉(強磁性材料部20)であり、黒色部が気孔40である。
10a 無機マトリックス部の表面
11 無機物質の粒子
20 強磁性材料部
100,100A 複合部材
Claims (7)
- 金属酸化物及び金属酸化水酸化物の少なくとも一方を主成分とし、実質的に金属単体及び合金を含まず、反磁性体又は常磁性体である無機物質からなる無機マトリックス部と、
前記無機マトリックス部の内部に存在し、前記無機マトリックス部を構成する前記無機物質と直接固着し、強磁性体からなる強磁性材料部と、
を備え、
前記無機マトリックス部では、前記無機物質の粒子が連続的に存在しており、
前記無機マトリックス部は、前記強磁性材料部よりも体積比率が大きい、複合部材。 - 前記無機マトリックス部の断面における気孔率が20%以下である、請求項1に記載の複合部材。
- 前記強磁性材料部の表面全体は、前記無機マトリックス部により覆われている、請求項1又は2に記載の複合部材。
- 前記強磁性材料部は、硬磁性体及び軟磁性体の少なくとも一方を含む、請求項1から3のいずれか一項に記載の複合部材。
- 前記強磁性材料部は、強磁性を示す金属を含む、請求項1から4のいずれか一項に記載の複合部材。
- 前記無機マトリックス部は多結晶体である、請求項1から5のいずれか一項に記載の複合部材。
- 前記無機マトリックス部を構成する無機物質は、実質的に水和物を含有しない、請求項1から6のいずれか一項に記載の複合部材。
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2021
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- 2021-02-05 CN CN202180092976.4A patent/CN116848597A/zh active Pending
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CN116848597A (zh) | 2023-10-03 |
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