TWI236462B - A magnesium zing titanate powder with a barium boron lithium silicate flux and a multilayer ceramic cog capacitor made therefrom - Google Patents
A magnesium zing titanate powder with a barium boron lithium silicate flux and a multilayer ceramic cog capacitor made therefrom Download PDFInfo
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- TWI236462B TWI236462B TW090121140A TW90121140A TWI236462B TW I236462 B TWI236462 B TW I236462B TW 090121140 A TW090121140 A TW 090121140A TW 90121140 A TW90121140 A TW 90121140A TW I236462 B TWI236462 B TW I236462B
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- 239000000843 powder Substances 0.000 title claims abstract description 61
- 230000004907 flux Effects 0.000 title claims abstract description 33
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000000919 ceramic Substances 0.000 title claims description 57
- 239000011777 magnesium Substances 0.000 title claims description 16
- 229910052749 magnesium Inorganic materials 0.000 title claims description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims description 9
- 239000003990 capacitor Substances 0.000 title abstract description 47
- 229910052912 lithium silicate Inorganic materials 0.000 title description 2
- OCRZOALOZDFIDT-UHFFFAOYSA-N [B].[Ba].[Li] Chemical compound [B].[Ba].[Li] OCRZOALOZDFIDT-UHFFFAOYSA-N 0.000 title 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 title 1
- 239000000203 mixture Substances 0.000 claims abstract description 38
- 238000005245 sintering Methods 0.000 claims abstract description 31
- 229910052709 silver Inorganic materials 0.000 claims abstract description 19
- 239000004332 silver Substances 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- PGTXKIZLOWULDJ-UHFFFAOYSA-N [Mg].[Zn] Chemical compound [Mg].[Zn] PGTXKIZLOWULDJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003985 ceramic capacitor Substances 0.000 claims abstract description 10
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 9
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910001252 Pd alloy Inorganic materials 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims description 26
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 16
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- 239000011575 calcium Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 6
- 229910052791 calcium Inorganic materials 0.000 claims description 6
- YSZKOFNTXPLTCU-UHFFFAOYSA-N barium lithium Chemical compound [Li].[Ba] YSZKOFNTXPLTCU-UHFFFAOYSA-N 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 239000006184 cosolvent Substances 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 229910001316 Ag alloy Inorganic materials 0.000 claims description 2
- MCRXROYRQGVVNB-UHFFFAOYSA-N [Mg].[Zn].[Zn] Chemical compound [Mg].[Zn].[Zn] MCRXROYRQGVVNB-UHFFFAOYSA-N 0.000 claims description 2
- 238000001354 calcination Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 241001122767 Theaceae Species 0.000 claims 2
- GXUARMXARIJAFV-UHFFFAOYSA-L barium oxalate Chemical compound [Ba+2].[O-]C(=O)C([O-])=O GXUARMXARIJAFV-UHFFFAOYSA-L 0.000 claims 2
- 229940094800 barium oxalate Drugs 0.000 claims 2
- -1 zinc powder per acid Chemical class 0.000 claims 2
- 229910010252 TiO3 Inorganic materials 0.000 claims 1
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 claims 1
- ZRWYHLYYOVVWLQ-UHFFFAOYSA-N [Ca].[Zn].[Zn] Chemical compound [Ca].[Zn].[Zn] ZRWYHLYYOVVWLQ-UHFFFAOYSA-N 0.000 claims 1
- YSVDCBWXAFRNFY-UHFFFAOYSA-N [Li].[Li].[Ba] Chemical group [Li].[Li].[Ba] YSVDCBWXAFRNFY-UHFFFAOYSA-N 0.000 claims 1
- VSTCOQVDTHKMFV-UHFFFAOYSA-N [Ti].[Hf] Chemical compound [Ti].[Hf] VSTCOQVDTHKMFV-UHFFFAOYSA-N 0.000 claims 1
- 239000001273 butane Substances 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 239000008187 granular material Substances 0.000 claims 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims 1
- 238000006557 surface reaction Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 21
- 229910052788 barium Inorganic materials 0.000 abstract description 8
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052763 palladium Inorganic materials 0.000 abstract description 2
- SWELZOZIOHGSPA-UHFFFAOYSA-N palladium silver Chemical compound [Pd].[Ag] SWELZOZIOHGSPA-UHFFFAOYSA-N 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 11
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- 238000010304 firing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 101100328486 Caenorhabditis elegans cni-1 gene Proteins 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- XBJJRSFLZVLCSE-UHFFFAOYSA-N barium(2+);diborate Chemical compound [Ba+2].[Ba+2].[Ba+2].[O-]B([O-])[O-].[O-]B([O-])[O-] XBJJRSFLZVLCSE-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 239000010953 base metal Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 239000012700 ceramic precursor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910003439 heavy metal oxide Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241001492414 Marina Species 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 241000270708 Testudinidae Species 0.000 description 1
- MTDMHAKNYZTKQR-UHFFFAOYSA-N [Ba][Ba] Chemical compound [Ba][Ba] MTDMHAKNYZTKQR-UHFFFAOYSA-N 0.000 description 1
- UCHHTHXUPVVOIA-UHFFFAOYSA-N [Mg][Zn][In] Chemical compound [Mg][Zn][In] UCHHTHXUPVVOIA-UHFFFAOYSA-N 0.000 description 1
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 229910021523 barium zirconate Inorganic materials 0.000 description 1
- DQBAOWPVHRWLJC-UHFFFAOYSA-N barium(2+);dioxido(oxo)zirconium Chemical compound [Ba+2].[O-][Zr]([O-])=O DQBAOWPVHRWLJC-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052796 boron Inorganic materials 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
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 description 1
- JXDXDSKXFRTAPA-UHFFFAOYSA-N calcium;barium(2+);oxygen(2-);titanium(4+) Chemical compound [O-2].[Ca+2].[Ti+4].[Ba+2] JXDXDSKXFRTAPA-UHFFFAOYSA-N 0.000 description 1
- 125000005586 carbonic acid group Chemical group 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- SMBQBQBNOXIFSF-UHFFFAOYSA-N dilithium Chemical compound [Li][Li] SMBQBQBNOXIFSF-UHFFFAOYSA-N 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000013101 initial test Methods 0.000 description 1
- 230000009021 linear effect Effects 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 description 1
- 238000009766 low-temperature sintering Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000004246 zinc acetate Substances 0.000 description 1
- ZPEJZWGMHAKWNL-UHFFFAOYSA-L zinc;oxalate Chemical compound [Zn+2].[O-]C(=O)C([O-])=O ZPEJZWGMHAKWNL-UHFFFAOYSA-L 0.000 description 1
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- 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
- C04B35/63—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 using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
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- 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
- C04B35/46—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 titanium oxides or titanates
- C04B35/462—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 titanium oxides or titanates based on titanates
- C04B35/465—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 titanium oxides or titanates based on titanates based on alkaline earth metal titanates
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- C04B35/46—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 titanium oxides or titanates
- C04B35/462—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 titanium oxides or titanates based on titanates
- C04B35/465—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 titanium oxides or titanates based on titanates based on alkaline earth metal titanates
- C04B35/468—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 titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
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- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
- H01G4/1209—Ceramic dielectrics characterised by the ceramic dielectric material
- H01G4/1218—Ceramic dielectrics characterised by the ceramic dielectric material based on titanium oxides or titanates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
- H01G4/1209—Ceramic dielectrics characterised by the ceramic dielectric material
- H01G4/1218—Ceramic dielectrics characterised by the ceramic dielectric material based on titanium oxides or titanates
- H01G4/1227—Ceramic dielectrics characterised by the ceramic dielectric material based on titanium oxides or titanates based on alkaline earth titanates
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- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
- H01G4/1209—Ceramic dielectrics characterised by the ceramic dielectric material
- H01G4/1236—Ceramic dielectrics characterised by the ceramic dielectric material based on zirconium oxides or zirconates
- H01G4/1245—Ceramic dielectrics characterised by the ceramic dielectric material based on zirconium oxides or zirconates containing also titanates
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- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/30—Stacked capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2311/00—Metals, their alloys or their compounds
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
- C04B2235/3234—Titanates, not containing zirconia
- C04B2235/3236—Alkaline earth titanates
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1236462
五、發明說明(1) 有關申請的相^參考 本申請是於1 9 98年1 2月31日提交的未審定專利申請 09/224,536的部分延續。 發明之領域 本發明涉及符合COG標準並含有陶瓷電介質的多層陶瓷 電谷為"亥陶瓷電介質基於與含燒結助熔劑的玻璃進行混 合的鈦酸鎂鋅,該混合材料在遠低於u〇(rc的溫度下能夠 發明之背景 符合EIA標準、C〇G(a· k. a· NP0)的溫度穩定的陶瓷電容 為在從-5 5 C至1 2 5 °C的溫度範圍内的電容變化必須保持在 + /-30 ppm内。這種電容器還必須具有在i兆赫下大於 1,0 0 0的品質因數Q,相當於耗散因數(DF)不大於〇. 〇1。已 經在一定條件下燒製了陶瓷前體粉末,獲得95%理論密度 的熟化陶瓷,這種陶瓷是很適合作為這種高質量電介質陶 瓷的。高燒結溫度的陶瓷前體材料如鈦酸鎂鋅的燒結二护 在11 0 0 C的溫度下完成。眾所周知的是,在高溫燒製 (high-firing)的陶瓷粉末中加入少量含助熔劑的玻璃作 為燒結助劑來降低製造熟化電介質陶瓷所需的燒結溫度。 在約11 00 C可燒結的COG陶瓷組合物的例子披露於1 989年 11月11日公佈的美國專利4, 882, 65 0和1 985年8月6日公佈 的美國專利4, 533, 974中。 在製造多層電容器(MLC)時,將一些金屬層狀電極分別 夾置在包含助炫劑(若有的話)的生料前體陶瓷粉末的各連
C:\2D-CODE\90-10\90121140.ptd 第5頁 1236462 五、發明說明(2) ' 續層之間。這樣,掩埋在生料(未燒結)陶瓷中的金屬電極 必然會經受高得足以將陶瓷燒結成熟化的溫度。金屬電極 最常用的材料配方是7〇重量%的人8和30重量%的?(1。這種組 成的合金的熔化溫度為丨丨5 〇 ,它一般用於加熱到不高2 1 1 40 °C溫度的MLC電容器的電極,以免金屬熔化和流出^、 危險。當使用不能將溫度保持在丨〇 偏差内的燒結爐時' , 就得使用設置在更低溫度的爐子,在製造MLC時 步採用10 C的安全因數。 加入較多量的燒結助熔劑能降低MLC的燒結溫度,作^ 是以降低介電常數(K)和降低其他性能指標如Q為X代’ /它 能在低於約1 1 0 0 °c的溫度下燒結成高密度的陶兗前:、。 助熔劑的已知原料配方是比較少的,而工業上實於二加上 種原料粉末混合物甚至更少,因為該配方和燒結:用這 苛刻,導致較低的產率。 、、° /、件較為 把的費用比銀的費用高一個數量級,|巴一船H制 電容器成本中最大的因素。一種在掩埋的電極 辦法是使用一種賤金屬如鎳和/或銅。然而,用賤A 1巴的 極,必須在低於賤金屬熔點(對鎳來說是丨4 5 3。。,至屬電 說是1 0 8 3 °C )的溫度下進行燒結。並且燒結必須在^,來 環境中進行,這就大大地使步驟複雜化。對低壓氣的 境進行控制本身會提高成本,並且對由於在声姓$氣的環 失去氧而變成半導體性的陶瓷組合物的選擇^ ^ ^不會因 電介質陶瓷性能來說,就受到很大限制。 X件特定的 在許多空氣燒製的MLC電容器中所用的助炫劑 1236462 五、發明說明(3) 鎘和鉛的氧化物,這此氧化铷 饺點。斟认,人+曰i 一 物特別能有效地降低助熔劑的 的助炫劑,這就能有利地進-步降二 這些氧化物往往會降丽電容器二 與銀纪電極發生反應,甚至使品質因數更差。這 些揮發性的重金屬氧化物還奋 ^ 性的燒結結果。也許最重要二:a結爐’產生缺乏規律 尤A是饼w卜土! 要的疋它們會對環境構成危險, 上的危險。地衣k陶究粉末和MLC電容器的人員構成健康 準的夕ί:: Π:目的是提供一種用於製造符合c〇g標 ,nnn f 0 :電谷器的陶瓷粉末,這種原料粉末能夠在 以用二50Λ溫度在空氣氣氛中燒結成熟化,使得mlc可 =用銀δ置車父多而昂貴組分含量較少如85%Ag/i5%pd的電 月的再個目的疋提供這樣一種陶瓷粉末,它包含 由鋅組成的高溫燒製部分和基本不含錯 些有害重金屬氧化物的低溫燒結助溶劑部分。… 發明之概诫 取I種電介質陶竞粉末混合物主要由聚集顆粒組成,每個 I ίΐ ΐ由兩種粉末顆粒經溫和鍛燒並發生表面共反應 > =二、’、α 口起來,形成聚集顆粒的。這兩種粉末,一種是 究前體粉末’它是欽酸鎮鋅’占電介質陶兗 ;^5物的87 — 98重量%。另一種是粉末狀的硼矽酸鋇 鋰&結助熔劑’ έ電介質陶瓷粉末混合物的2 __ 13重量%。 欽酸鎮鋅粉末較好是充分反應的化合物Mg2/3Zn1/3Ti〇3,
第7頁 1236462 五、發明說明(4) ί中=高達2〇摩爾叫被等摩爾量的驗土金屬所取 代Η皮鋇所取代時,也可以取代高達6〇摩爾%。 對=;鋇=劑,,一種特別有…^ W 重里% gl4Sl〇4,3 — 4〇 重量% 的 重量"3Ba0. B2〇3。另一種較好的助=广二二 26 t *% 6Ul4S1〇4,20. 5 - 23. 5 t *% 6,B 〇 ^ #; ® " 重量%^Ba〇· B2 03。 30 β2°3^50-56 上述電介質陶甍粉末混合物經下述 重量%的鈦酸鎂辞與2—13重量% /衣付將87—98 助溶劑加在-&,混合成=酸鎖鐘燒結 。(:的溫度下進行溫和鍛燒,#广由=:’在6 〇 〇 — 7 5 0 獲传由均勻粉末混合物的聚隹 顆拉,、且成的粉末,其中各聚集顆粒基本上具有與總體粉太 中相同的鈦酸鎂鋅和硼矽酸鋇鋰的組: 集顆粒進行粉碎,•電介質陶究粉ΐ;合 平均聚Ϊ顆粒大小約為12微米的自由流動的粉末。成為 ::造多層陶瓷電容器的方法需要先製備漿料, 法疋在有機載體中研磨上述電介質陶兗粉末混合物,再步 成水料? ’然後乾燥。冑第一層有圖案的鈀銀合金膜沈積 到一層乾燥層上。然後將至少第二層生陶瓷層置於上述第 一層有圖案的合金膜上,獲得一個堆疊(stack)。再將第 二層有圖案的合金膜沈積在第二層生陶瓷層上,又將至少 第二層生陶瓷層堆積在第二層有圖案的合金膜的上面。然 後在9 5 0 — 1 1 2 0 C的溫度範圍内燒結此堆疊,冷卻後,將 銀糊料施塗到第一和第二合金層的邊緣延伸到的(陶竟)
C:\2D-CODE\90-10\90121140.ptd 第8頁
1236462
五、發明說明(5) 體的兩個端面上。使銀糊料熱固化之後,就形 第二合金層都接觸的終端。然後在固化的銀終端^ 和 層鎳膜。 电鍍一 Ϊ就獲得了一種多層陶兗電容器,它包含緻密熟化的陶 究體和至少-層掩埋在陶兗體内的層狀電極 :: 87 -98重量%的鈦酸鎂鋅和2—13重量%的粉末狀:體包含 锂燒結助炫劑。埋入的電極可以由銀和把的合 貝 中銀的含量至少為80重《。本發明認為,在製造c八 MLC電容器中,陶兗所需燒結溫度的降低可允許埋入銀良人 量,:的電極,並且具有此較高導電率的掩埋電極的心 電容器會顯不出較高的Q值。對Q值較為取決於電極電阻 而不太取決於電介質陶瓷本身固有Q值的C0G MLC電容器, 尤其如此、。這樣,COG多層電容器較低燒結溫度的這個°°好 處就可以導致較低的製造成本和較好的⑶G性能。 本發明還認為在陶瓷粉末的助熔劑部分中包含鋰可以降 低助熔劑的熔化溫度,並可以意想不到地減少多層^沉電 容器使用壽命試驗中不合格的現象。 本發明的上述目的可以使用上述硼矽酸鎂鋰燒結助熔劑 而達到。事實上’使用本發明的原料粉末並在約9 4 〇 _ 11 〇〇 °c的溫度範圍内進行燒結就可以製得MLC電容器,在 這個意義上本發明的上述目的已被超越。 較佳具體例之說明 製 造了試驗盤形陶瓷電容器,其中原料粉末的高溫燒製 組分是鈦酸鎂鋅。這些試驗盤形電容器製成如圖丨所示
C:\2D-CODE\90-10\90121140.ptd 第9頁 1236462 五」發明貌明⑹ =的龟介質陶瓷盤1 0具有黏合在盤形電容器兩個相反主 栌=的電極1 1和1 2。盤形電容器的製造比多層電容器容^ 成夕,且除了 DF和Q性能指標外,對於盤形電容器特定組 組1繞結條件的所有其他指標都是可由使用相同原料粉 _ :物的相應多層電容器所要獲得性能的有用指標。 製造原料陶瓷粉末一 教衣造陶瓷粉末原料混合物的一種方法,先是製備平均顆 ^大小約為1 · 〇微米的咼溫燒製粉末混合物,其辦法是將、 八〜9 8摩爾%的化學計量鈦酸鎂鋅(Μζτ)的一些前體物質現 二起來,其中高達4摩爾%的鎂可被鈣取代。這可以通過用 =摩爾量的鈦酸鈣替代鈦酸鎂部分(如2. 9摩爾%)實現。同 #地’也可以採用用來調節燒結粉末電容器體的TCC的其 這樣的鎂的部分取代物,例如等摩爾量的氧化鋇或錯酸 ^、。在锆酸鋇的情況下,它可以用來取代等摩爾量的鈦^ =。如上面提到的美國專利4,882,6 5 0所述,鋇在鈦酸鎂 鮮中的取代量可以高達60摩爾。/。。 、 度的粉末力… 硼和矽的氧化物或复箄=二 作燒結助熔劑,它由鋇、 〇 次其寺同物質組成。 :、、、、後研磨上述粉太、、日 在約6 0 0 t:的溫度下、、w ^ 口 ,,,、均勻的粉末混合物,而後 集顆粒組成的粉末下Τ中二二 體粉末混合物相同的;^各=顆粒基本上具有與均句前 微米。 )、、且成,t集顆粒的平均大小約為丨,2 111
C:\2D-C0DE\90-10\90121140.ptd
第10頁 1236462 五、發明説明(7) 一製造盤形電容器— 製造諸如圖1所示盤形電容器所用的方法如下所述。在 直徑為半央寸(12.7毫采)的模具中以15,000镑/平方英寸 的壓力將原料粉末混合物壓至厚度約為3 5密耳(〇 · 8 9毫 米)。然後在1 1 0 〇 °C時(除非下面另有說明外)將所得的圓 形生盤燒結3小時。冷卻後,將銀糊料施塗到各燒結盤j 〇 的兩個相反的表面上,隨後將該盤加熱到8 〇 〇 °C,使電極 1 1和1 2固化。 在某些實施例中主要的高溫燒製原料粉末的組成是 Mg"3 ZnwT i 〇3 ’其中用少量的約取代等摩爾量(如2 · 9摩爾 %)的镁。在其他的實施例中則只加入一些B a Z r 〇3。這種驗 土金屬在鈦酸鎂鋅中的取代或加入能夠有利地用來調節燒 結盤形電容器的電容溫度係數(TCC)。還加入了約〇· 〇1重 量%的碳酸猛,它一般用於改進許多不同種類的電介質陶 瓷配方的使用壽命試驗性能。在原料混合物中同樣加入了 粉末狀的硼矽酸鋇燒結助熔劑。 參見表I和I I,當在1 1 〇 〇〜丨丨5 〇 的溫度範圍内燒結電 介質陶瓷粉末時’硼酸鋇和矽酸辞的雙組分助熔劑是有效 的,但表I I中的實施例6a除外。僅使用〇· 5重量%的3BaO · Β^3和1· 0重量%的ZnjiO4時,燒製的電容器產生了非常高 的密度並且K值為23或24。 而且’ TCC的值均在c〇G標準内。另外,DF的值很低,尤 其是實施例3/ 4和7。這些電容器實施例的Q因數至少為 1 0, 0 0 0。儘管實施例2(由1· 2重量%的;^〇2 ·匕〇3和I 〇重
1236462 五、發明說明(8) 量%製備得)和實施例6未 燒製同樣的配方能達到:例6並=到熟…在 上很好。 …1 卫且其初始性能在一定程度 1至和石夕酸鋅雙組分繞結助溶劑的實施例 Λ :=:',,燒製的電容…^ :用I:,作:嗖果用了:些不同的添加劑,s的是延長 且曾用來延長使用壽命(=〇, ΓΒ:二劑是 表I I中的實施例1至6b所示,這此雷」 3和2〇3)。如 命試驗。 化些電谷器沒有通過使用壽 當試驗工少:量的碳酸链(〇·3重量 ,用二時’碳酸鐘的效果竟是很大,t想不到I: 表I和^中貫施例7所示,那些含有Li2C〇3的電容 使用哥命試驗,並且仍具有優良的電性 了 後,試驗了 Ll2S1〇4對使用壽命的影響。如表㈠…中匕, :j8所二,與Ll2c〇3相比’那些含#Li2Si〇4的電過 使用哥命試驗,並且達到了良好的電性能和線性性能」 施例8的(}因數比實施例7的低,這很可能是由於其ί ^ 一含有石朋石夕酸鎖鐘助熔劑的鈦酸鎂鋅約
較低燒結溫度的緣故。實施例7和8都在c〇G標 圍0C 衣k 了序列的忒知盤形電容器,其中原料粉末的 是90重量%的上述鈦酸鎂鋅铟知]n去曰Q/ a ☆ ^ 」、、且成 ^ ^ 秩鲜鈣和1 〇重量%的矽酸鋰硼酸鋇助 溶劑。 w 麥見表I I I,帛—組A組的試驗盤形電容器(即實施例卜
第12頁 1236462
包含由1摩爾石夕酸鐘(Li4Si04)、3摩爾硼酸高鋇(Ba0 . 1〇3) ^摩爾蝴酸鋇(Ba〇 . Μ)組成的原料粉末助炫劑。 6: 1主另外三個攔内所示,也可以將各實施例中助熔劑 雷1 t表不成佔助炫劑總量的重量%。各實施例有4個盤带 10容盤形電容器在1 0 0 0。。燒結,實施例 、。。在9 7 5 C燒結,實施例1 1的電容器在95〇 t焯 二,从及實施例1 2的電容器在9 2 5 〇c燒結,均如表丨丨i = 不 ° 第一至第九組試驗盤形電容 20、21-24、25-28、29 - 32 的助熔劑組成(B、C、D、E、F 在表II I的中間六個攔内。 器,即實施例1 3 — 1 6、1 7〜 、33 —36、37—40 和 41 — 44 、G、Η和I )分別類似地表示 在燒結和冷卻後,測量各實施例中4個盤形電容器的耗 散因數(DF)、23 t室溫的介電常數(κ)和在—55和+ 125它 測=的電容溫度係數(TCC),以κ的百分數變化表示,並對 所付的4個值取平均。這些資料列於表丨丨丨的最後五個攔 内。 在92 5 °C燒製九種組合物,所得樣品沒有一種是緻密和熟 化的,都是多孔的。進一步可以看出,具有A組原料粉末 組成且在1 0 0 0 °C和9 7 5 °C燒結的實施例9和丨0的電容器未達 到COG標準的TCC要求;所述要求是在—55。〇或+ 125的介 電常數(κ)的變化不大於室溫κ值的30%。在1〇〇(rc較高溫 度下燒結C、D、E和F組組成的電容器(對應於實施例丨7、 2 1、2 5和2 9 )也未達到C 0 G標準的這個τ c C要求。對於所有
1236462 五、發明說明(12) 米電介質厚度,此時 用壽命試驗的最初電持在125 r。若在使 1 P 口式驗的取初一百個小時内, 值降低兩個數量級, 為 。°、、、巴蝝電阻由初始 驗。 貝]°心為電谷為沒有通過使用壽命試 在表IV的實施例45、47、49和52中叽 並經焊料塗覆,而實施例46谷=終二 :電谷器終端沒有經歷這些過程。可二50、51和53 和47的電容器具有相同的陶瓷組成,即ί :貫施例45、46 熔劑(與表I II的C組中 I 3 1 〇重量%的助 、止甲相同的助炫劑),/
I 如何,實施例45和47細雷护M + j 仁不官其燒結溫度 4 ί趙電锻錦的雷交哭抑 命試驗。然而,其餘 /又有通過使用哥 貫施例4 8 — 5 3的雷宜盟土 f 壽命試驗,而不管它侗日丕% A 的冤谷為'都通過了使用 &匕們是否預先進行過鎳φ μ ^ _ 器都包含5重量%或7 5番旦。/沾上 鎳電鍍;迫些電容 里尺丨· b重置%的助熔劑。較女曰从#卜今丨人 危及COG電容器的使用壽命試 / 大置的助熗劑會 r生月匕都疋良好的。戶斤以當塗銀的mlc 一 鎳電鍍時,較好的县> +饮πα 裔兩知要進订 曰电艰才 疋在本發明的MLC電容器中蚀田小於s舌 的硼矽酸鋇鋰助熔劑。 中使用/於8重 從表III和IV所列的資料可以看出,可以使用較多量的 硼矽酸鋇鋰助熔劑來製造C0G電容器,這就可以使掩埋的 電極所含的鈀比常用的70%Ag/30%Pd合金少得多。 一不同量的硼矽酸鋇鋰助熔劑對C0G標準規定的性能 影響一 製造了 一系列MLC電容器,其所用原料粉末混合物中的 助熔劑的量在0—12重量%的範圍内變化’並且燒結溫度從
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五、發明說明(13) 9 5 0 C變化到1 1 3 0 °C。這些變數連同相應的試驗資料 表V中。對於這一系列的試驗電容器,原料粉末使用、 Mg2/3Zni/3Ti03加上2· 9重量%的Ca〇,助熔劑由22· 61重旦
BaO · B2〇3、53· 23 重量% 的3BaO · B2〇3 和 24· 1 6 重量% 的。
LiJi〇4組成。在這裏證實了可以使用適當量的助熔 95(TC至1 13(TC範圍内的任何溫度下燒結這些原料至^^ 化。使用大量助熔劑(10 sl2重量的實施例62、κ 和64能提供優良的COG標準規定的性能。使用中等量助熔 劑(5 —8重量%)的實施例59〜61也是非常好的。實施例58 表明在助熔劑的量為5重量%時,丨〇 00 I的燒結溫度對原料 粉末來說要完全反應和達到熟化是太低了。全都在丨丨3 〇 t 燒製的實施例5 4 — 5 7能燒結並製得了良好的電介質體,但 不符合COG標準的TCC極限。可以認為,在鈦酸鎂鋅鈣中用 少量的鈦酸鋇取代鈦酸鈣會很可能使TCC性能更接近COG標 準的極限。然而,可以認為本發明所含助熔劑的量限制於 不小於2重量%,不包括實施例5 6的配方。
C:\2D-CODE\90-10\90121140.ptd 第17頁 1236462 五、發明說明(15)
表I I 使用壽命試驗 300V、125°C、1〇〇 小時 在1小時後未通過 在20小時後未通過 在10小時後未通過 在10小時後未通過 在1小時後未通過 < 在2小時後未通過 通過 通過 經過 300V、125°C、〇. 5 小時的IR(ohm) >109 τ-Η 八 >10° >109 < >109 >10" 〇 r-H 八 UDBD 伏 655 < 2100 2340 < 1860 2110 1800 :%DF 1MHz 0. 03 0.01 0.01 < 0.09 〇 0. 04 CSI CS1 CO CN1 CO CS) < CO (X! C0 ΓΟ CN] 電容 lMHz(PF) 355 265 00 CN1 寸 420 432 2: 417 411 407 密度 g/cm'1 卜 T—Η — CJ5 y—i CS1 S 4. 18 4. 27 CN1 燒結溫度 i 1 °c 1100 1130 1130 1130 1140 1130 1150 1130 1110 實施 例 r-H CN! CO cd 卜 00
圓國·III C:\2D-CODE\90-10\90121140.ptd 第 19 頁 1236462 五、發明說明(16) 表 III :(ΡΡΜ/^ 25 到 125 CNJ LO CNI 1 cc ◦ r—( 1 CD ① i C\1 LO 1 -53 LC C\l 00 1 TC( -55 到 25 ο 了 cn 下 r—i 1 〇· 〇〇 CNI 1 03 LO CN 1 〇 cp LO 1 %DP 0. 05 r—* 〇 0.04 1 0 0.0L 〇 1 〇 0.02 〇 1 〇 0. 02 〇 1 CO CO CNI CS1 1 Csl Csl 1 CNI CS] (XI CNI 1 1 密度 g/cm3 4. 16 4. 18 CO r-H j 4. 15 4. 12 4.04 r-H T "'( -^r 3. 97 _D hV"7 ' C\1 4. 12 r-H Γ'" < _D 徐 BaO · B2 0, 〇 0 〇 0 〇〇 〇〇 〇〇 CO 22.6 ! ① CO CNI ① CN] (Nl ◦ C\1 m ci LO LO ci LO 雷ft% 3BaO · B20, CO 守 CO 1—( CO 寸 CS] ai ① CN3 Cji CO CT2 ① CN3 CO c6 LO CM CO in CO c6 LO CM CO LO s T—H 5: § Li,丨 SiQ, οό CN1 〇5 (N1 28.6 28.6 CO CN) CS1 CM oa CS1 c6 T™< CO c6 c6 BaO · B2〇.i m ci LO LO ci LO ci LO csi r-H LO cn5 r—( LO LO cn3 LO CNI LO CS3 LO CNI LO CNI LO LO LO LC 摩爾 3BaO · B 2Ο3 LO LO cn5 t—H IO CNI y—H in oi LO CO LO S LO LO LO Csl LO CN! LO 〇〇 in CO LO CS] LO CNI LO CSI LO CNI Li,SiO, s s s s S s S S S g S g 另 燒結 潇 °C 1000 975 950 LO C\1 1000 LO & g cr. LO CNJ cn 1000 LO 950 LO CNI ⑦ 1000 LO 〇 LO LO CNI 驾S 0 1—H r-H CNI i—H CO r-H 寸 LO r-H 卜 2 CN〇 CO CO CO 寸 CNI Ed < CO 0 C:\2D-CODE\90-10\90121140.ptd 第20頁 1236462 五、發明說明(17) 表III (續) 馨 撇 LOSIlsLnCNll 9c\ls?99- V,/Ncy)x>l Z9丨
00 LO I 2 CS1 S' (N1 τζ co
iS
CO
T 」α% ζζ ζι > JEo/tyo 0 ΓΗ :· i ILO.ILOILO occ.CMlco %ΪΒ
K g s s g ?0 s g s •^r* s s c^ c^ CN3 〇3 ?? ?? ?5
CG ”1 εοε ci ci g g g og· CMi 91 9Ζ oco· 〇名0 麗
LO CO LO CS1 L〇 CN]
LO
LO OTS-n 09 s s s o
O 〇 o 8 s
S p o o o
0001 !H i I g g o g LO CN1 o & s
O g g o o
LO g IK驾匡s nd s
CO CO
LO CO 〇〇 o CN1 C:\2D-CODE\90-10\90121140.ptd 第21頁 11 1236462
C:\2D-CODE\90-10\90121140.ptd 第23頁 1236462 圖式簡單說明 圖1表示盤形陶瓷電容器的側面剖視圖。 圖2表示具有掩埋電極的多層陶瓷(MLC)電容器的側面剖 視圖。
C:\2D-CODE\90-10\90121140.ptd 第25頁
Claims (1)
1236462
1 · 一種電介質陶瓷余v古、、θ 成,該每個聚集顆粒;Β:合物,它主要由聚集顆粒組 生表面共反應而均勻纟士 ^兩種粉末顆粒經溫和鍛燒並發 個聚集顆粒中的該兩:1成聚集顆粒的’在該每 酸鎮鋅每粉末和2—13重4顆粒分別由87 一98重量%的鈦 劑組成,其中,該鈦ϋ㈣末狀财酸㈣燒結助溶 Mg η τ. 、次鎂鋅鈣粉末是完全反應的化合物 Mg2/3Ζη1/3Τ 1 〇3,該Mg 被算麼 m 旦 的_、15.5摩爾%的2二摩3\!:約所取代’並由31釋 τ·η 3·5摩爾%的〇8〇及50摩爾%的 1〇二成;—而,:夕酸鋇鐘助炫劑咖^ u 1 4 重1%的以0 . M3和10 — 76重量%的3BaO . B:03組成,故該聚集顆粒在95〇 一 112〇。。的溫度範圍内燒 、、、口,以形成緻密熟化的陶瓷體。 2·如申請專利範圍第丨項之電介質陶瓷粉末混合物,其 中,該硼矽酸鋇鋰助熔劑係由2 2 _ 2 6重量%的L丨4 s丨〇4、 20· 5 —23· 5 重量% _a0 · b2〇3 和5〇 一56 重量% 的二〇4 組成。 3 · —種電介質陶瓷粉末混合物之製造方法,其包含: a)將87 — 98重量%的鈦酸鎂辞鈣與2 一 13重量%的粉末狀 獨矽酸鎖鐘燒結助熔劑加在一起,其中,該鈦酸鎂鋅約粉 末疋元全反應的化合物Mg2,3 Zn"3 T i 〇3,該jfg被等摩爾量的 鈣所取代,並由3 1摩爾%的]^0、1 5 · 5摩爾%的2〇〇、3· 5摩 爾%的C a 0及5 0摩爾%的T i 〇2組成,而該石夕酸鋇裡助嫁劑 則係由10 — 55重量% WLi4Si04、3 — 40重量%的63〇 ·氏〇3和 10 —76 重量% 的383〇 · Β2 03 組成;
1236462
修正 _案號9Q12〗Un 申請專利範圍 b)將該加在一起的兩種粉末混合 。)在60 0-750t的溫度 末混,物; f由該均句粉末混合物的聚集顆粒混二;; 聚集顆粒基本上具有與該整_ 曰2的知末,其中这各 鋅鈣和硼矽酸鋇鋰的組成;^π末此5物中相同的鈦酸鎂 d)該聚集顆粒在9 5 〇 — 11 2 〇 °c的、、四择μ㈤ 成緻密熟化的陶竟體。oc的-度乾圍内燒結,以形 4·如申請專利範圍第3項之方法,盆 一、 微米的能自由流動的電介質陶竟粉末混合物。 5· —種多層陶瓷電容器之製造方法,其包含·· a)製造漿料,其過程是在有機載體中研磨一種電陶 竞粉末混合物,該混合物主要由聚集顆粒組成,該每個聚 集顆粒都是由兩種粉末顆粒經溫和锻燒並發生表面並反應 而均勻結合起來,形成聚集顆粒的,在該每個聚集顆粒^ 的該兩種粉末顆粒分別由87 一 98重量%的鈦酸鎂辞鈣粉末 和2 — 13重量%的粉末狀硼矽酸鋇鋰燒結助熔劑組成,其 中’該鈦酸鎂鋅詞粉末是完全反應的化合物 Mg^Zn^TiO3 ’該Mg被等摩爾量的鈣所取代,並由31摩爾% 的MgO、15· 5摩爾%的211〇、3. 5摩爾%的〇3〇及50摩爾%的 丁 1 〇2組成,而該硼矽酸鋇鋰助熔劑則係由丨〇 _ 5 5重量%的 Li4Si04、3 —40 重量% 的BaO · B2〇3 和1〇 — 76 重量% 的36&0 · B2 03組成, b)形成該漿料的一些層,乾燥這些層,將第一種有圖案
(::\總檔\90\90121140\90121140(替換)-2.ptc 第27頁 1236462
案號 90121 Uf) 申請專利範圍 的=合ί膜沈積到-層該經乾燥的層上; 上,形成-個堆疊,再ί;置-層有圖案的合金膜 第二層生陶究層上,層合金膜沈積在該 第三層生陶竟層; Λ -曰有圖案的膜上形成至少 d )在9 5 0 — 1 1 2 0 °C的溫声β㈤ 熟化的陶究體; 又軌圍内燒結該堆疊,形成緻密 。將銀糊料施塗到該第—層和第二 可以延伸到的該陶瓷體的兩 口茶層的邊緣 f)加熱該堆疊,使該銀糊料 ^ 第二層合金層都接觸的、終’ >成^、該各第一層和 ^如㈣㈣範圍第5項之^ 錄在該固化的銀終端上施加—層錄層。 匕枯通過電 7. -種多層陶竟電容器’其包含:密 少-層掩埋在該陶竟體内的層狀電極,該至少一 :::陶究體的-端上’該陶竞體與該掩埋的電極共同』 、製,孩陶瓷體由87 — 98重量%的鈦酸鎂鋅鈣和2 一13重量 %的粉末狀硼矽酸鋇鋰燒結助熔劑組成,其中,該鈦酸鎮 鋅,粉末是完全反應的化合物Mg2/3Zni/3Ti〇3,該Mg被等摩 爾量的1弓所取代’並由31摩爾%的^〇、15· 5摩爾%的2[1〇、 3 · 5摩爾%的C a 0及5 0摩爾%的τ丨〇2組成,而該硼矽酸鋇鋰助 炫劑則係由10 —55重量%的!^。^、3 —4〇重量%的以〇 · 62 03和10-76重量%的36叻12〇3組成。 8 ·如申請專利範圍第7項之多層陶瓷電容器,其中,該
匸:\總檔\90\9〇121140\90121140(替換)-2.ptc 第28頁 1236462 _案號90121140_年月曰 修正_ 六、申請專利範圍 至少一層掩埋的電極是銀和鈀的合金,其中該銀的量至少 為8 0重量%。 9.如申請專利範圍第7項之多層陶瓷電容器,其中,該 石夕酸鋇鋰助溶劑由2 2 — 2 6重量%的L i 4 S i 04、2 0 · 5 — 2 3 · 5 重量%的B a Ο · B2 03和5 0 — 5 6重量%的3 B a Ο · B2 03組成。
C:\ 總檔\90\90121140\90121140(替換)-2.ptc 第29頁
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FR2520729B1 (fr) | 1982-02-02 | 1986-01-31 | Europ Composants Electron | Composition ceramique dielectrique a base de titanate de baryum, d'oxyde de lithium et de fluorure de zinc, condensateur utilisant une telle composition et procede de fabrication de ladite composition |
US4533974A (en) | 1984-04-09 | 1985-08-06 | Sprague Electric Company | Low-firing high Q monolithic ceramic capacitor |
US4612600A (en) | 1984-10-29 | 1986-09-16 | Tam Ceramics Inc. | Low fire ceramic compositions |
US4898844A (en) * | 1986-07-14 | 1990-02-06 | Sprague Electric Company | Process for manufacturing a ceramic body having multiple barium-titanate phases |
US4882650A (en) * | 1988-12-05 | 1989-11-21 | Sprague Electric Company | Magnesium titanate ceramic and dual dielectric substrate using same |
US5051863A (en) * | 1989-10-31 | 1991-09-24 | Taiyo Yuden Co., Ltd. | Solid dielectric capacitor and method of manufacture |
US5089933A (en) * | 1989-12-04 | 1992-02-18 | Taiyo Yuden Co., Ltd. | Solid dielectric capacitor and method of manufacture |
JPH06349335A (ja) * | 1993-06-11 | 1994-12-22 | Ube Ind Ltd | 誘電体磁器組成物 |
FI116139B (fi) * | 1994-11-29 | 2005-09-30 | Kyocera Corp | Eristävä keraaminen koostumus, tästä koostumuksesta tehty monikerroksinen resonaattori ja tätä resonaattoria hyväksikäyttävä monikerroksinen suodatin |
DE19546237A1 (de) | 1995-12-12 | 1997-06-19 | Philips Patentverwaltung | Vielschichtkondensator mit Dielektrikum aus modifiziertem Bariumstrontiumtitanat |
US6251816B1 (en) * | 1998-12-31 | 2001-06-26 | Mra Laboratories, Inc. | Capacitor and dielectric ceramic powder based upon a barium borate and zinc silicate dual-component sintering flux |
-
2000
- 2000-08-31 US US09/652,562 patent/US6309995B1/en not_active Expired - Lifetime
-
2001
- 2001-08-22 JP JP2001251512A patent/JP2002137963A/ja active Pending
- 2001-08-27 CN CNB011252634A patent/CN1148332C/zh not_active Expired - Fee Related
- 2001-08-28 TW TW090121140A patent/TWI236462B/zh not_active IP Right Cessation
- 2001-08-29 AT AT01307323T patent/ATE315013T1/de not_active IP Right Cessation
- 2001-08-29 EP EP01307323A patent/EP1199290B1/en not_active Expired - Lifetime
- 2001-08-29 DE DE60116449T patent/DE60116449T2/de not_active Expired - Fee Related
- 2001-08-29 KR KR10-2001-0052402A patent/KR100437883B1/ko not_active IP Right Cessation
-
2004
- 2004-08-03 HK HK04105702A patent/HK1062955A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP1199290A1 (en) | 2002-04-24 |
ATE315013T1 (de) | 2006-02-15 |
KR100437883B1 (ko) | 2004-06-30 |
CN1341575A (zh) | 2002-03-27 |
CN1148332C (zh) | 2004-05-05 |
US6309995B1 (en) | 2001-10-30 |
DE60116449D1 (de) | 2006-03-30 |
EP1199290B1 (en) | 2006-01-04 |
JP2002137963A (ja) | 2002-05-14 |
KR20020018094A (ko) | 2002-03-07 |
HK1062955A1 (en) | 2004-12-03 |
DE60116449T2 (de) | 2006-07-06 |
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