JP2008074677A - 電気浸透材及びその製造方法と電気浸透流ポンプ - Google Patents
電気浸透材及びその製造方法と電気浸透流ポンプ Download PDFInfo
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- JP2008074677A JP2008074677A JP2006257542A JP2006257542A JP2008074677A JP 2008074677 A JP2008074677 A JP 2008074677A JP 2006257542 A JP2006257542 A JP 2006257542A JP 2006257542 A JP2006257542 A JP 2006257542A JP 2008074677 A JP2008074677 A JP 2008074677A
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- electroosmotic
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- powder
- porous sintered
- fused
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- 239000000463 material Substances 0.000 title claims abstract description 184
- 238000004519 manufacturing process Methods 0.000 title claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 109
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 22
- 239000011707 mineral Substances 0.000 claims abstract description 22
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052650 alkali feldspar Inorganic materials 0.000 claims abstract description 15
- 239000010453 quartz Substances 0.000 claims abstract description 15
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052622 kaolinite Inorganic materials 0.000 claims abstract description 11
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims description 101
- 239000007788 liquid Substances 0.000 claims description 69
- 239000005350 fused silica glass Substances 0.000 claims description 64
- 238000005370 electroosmosis Methods 0.000 claims description 59
- 239000002245 particle Substances 0.000 claims description 54
- 235000012239 silicon dioxide Nutrition 0.000 claims description 47
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 44
- 239000011148 porous material Substances 0.000 claims description 42
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 34
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 24
- 238000010304 firing Methods 0.000 claims description 23
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 22
- 238000001354 calcination Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 13
- 239000011812 mixed powder Substances 0.000 claims description 13
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 11
- 239000010433 feldspar Substances 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 6
- 239000002585 base Substances 0.000 abstract description 10
- HEHRHMRHPUNLIR-UHFFFAOYSA-N aluminum;hydroxy-[hydroxy(oxo)silyl]oxy-oxosilane;lithium Chemical compound [Li].[Al].O[Si](=O)O[Si](O)=O.O[Si](=O)O[Si](O)=O HEHRHMRHPUNLIR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052670 petalite Inorganic materials 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 63
- 230000032258 transport Effects 0.000 description 37
- 239000002994 raw material Substances 0.000 description 28
- 239000000654 additive Substances 0.000 description 20
- 230000000996 additive effect Effects 0.000 description 19
- 239000013078 crystal Substances 0.000 description 18
- 238000005245 sintering Methods 0.000 description 17
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- 230000000694 effects Effects 0.000 description 11
- 239000000758 substrate Substances 0.000 description 8
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- 230000008859 change Effects 0.000 description 6
- 230000005684 electric field Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 5
- 238000003746 solid phase reaction Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 238000010298 pulverizing process Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
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- 241000566146 Asio Species 0.000 description 2
- -1 BaSiO 3 Chemical class 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000005842 biochemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
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- 230000001747 exhibiting effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910018068 Li 2 O Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910000971 Silver steel Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- GEIAQOFPUVMAGM-UHFFFAOYSA-N ZrO Inorganic materials [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 description 1
- HERJJROLHRDFEX-UHFFFAOYSA-N [AlH3].[Si](O)(O)(O)O Chemical compound [AlH3].[Si](O)(O)(O)O HERJJROLHRDFEX-UHFFFAOYSA-N 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
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- 239000010962 carbon steel Substances 0.000 description 1
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- 229910000420 cerium oxide Inorganic materials 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
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- 239000012467 final product Substances 0.000 description 1
- 229910000449 hafnium oxide Inorganic materials 0.000 description 1
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 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
- 238000002156 mixing Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 150000003891 oxalate salts Chemical class 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000002459 porosimetry Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
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- 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
- C04B35/14—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 silica
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- C04B35/16—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 silicates other than clay
- C04B35/18—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 silicates other than clay rich in aluminium oxide
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/447—Systems using electrophoresis
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
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Abstract
【解決手段】100重量部の溶融石英又は溶融ケイ酸(母材SiO2)に対し、BaO、SrO、CaO、TiO2、ZrO2、Na2O、K2Oの各成分の少なくともいずれか1種、又は、アルミニウムケイ酸を含有する天然鉱物(アルカリ長石、カオリナイト、葉長石等)、BaSiO3、BaTiO3、BaZrO3、SrSiO3、SiCの少なくともいずれか1種を合計で0.05〜10重量部の割合で添加する。母材は、溶融石英又は溶融ケイ酸に溶融アルミナが添加されたSiO2−Al2O3であってもよい。
【選択図】図1
Description
100重量部の溶融石英又は溶融ケイ酸に対し、BaO成分、SrO成分、CaO成分、TiO2成分、ZrO2成分、Na2O成分、K2O成分の群から選択される少なくとも1種が合計で0.05〜10重量部添加され、
且つ前記溶融石英又は前記溶融ケイ酸の平均粒径が0.2〜7.5μmであることを特徴とする。
100重量部の溶融石英又は溶融ケイ酸に対し、アルミニウムケイ酸塩を含む天然鉱物、BaSiO3、BaTiO3、BaZrO3、SrSiO3、SiCの群から選択される少なくとも1種が合計で0.05〜10重量部添加され、
且つ前記溶融石英又は前記溶融ケイ酸の平均粒径が0.2〜7.5μmであることを特徴とする。
溶融石英又は溶融ケイ酸と溶融アルミナとの割合がモル%で65〜99.8:35〜0.2であるSiO2−Al2O3の100重量部に対し、BaO成分、SrO成分、CaO成分、TiO2成分、ZrO2成分、Na2O成分、K2O成分の群から選択される少なくとも1種が合計で0.05〜10重量部添加され、
且つ前記溶融石英又は前記溶融ケイ酸の平均粒径が0.2〜7.5μmであり、前記溶融アルミナの平均粒径が0.3〜10μmであることを特徴とする。
溶融石英又は溶融ケイ酸と溶融アルミナとの割合がモル%で65〜99.8:35〜0.2であるSiO2−Al2O3の100重量部に対し、アルミニウムケイ酸塩を含む天然鉱物、BaSiO3、BaTiO3、BaZrO3、SrSiO3、SiCの群から選択される少なくとも1種が合計で0.05〜10重量部添加され、
且つ前記溶融石英又は前記溶融ケイ酸の平均粒径が0.2〜7.5μmであり、前記溶融アルミナの平均粒径が0.3〜10μmであることを特徴とする。
前記混合粉末に対して800℃〜1280℃で仮焼処理を施し、仮焼物を得る工程と、
前記仮焼物を平均粒径0.1〜8.5μmに粉砕して仮焼粉末とする工程と、
前記仮焼粉末にバインダを添加した後に成形加工を行って成形体を作製する工程と、
前記成形体に対して1000℃〜1350℃で焼成処理を施して多孔質焼結体とする工程と、
を有し、
前記溶融石英粉末又は前記溶融ケイ酸粉末として、平均粒径が0.2〜7.5μmであるものを用いることを特徴とする。
前記混合粉末に対して800℃〜1280℃で仮焼処理を施し、仮焼物を得る工程と、
前記仮焼物を平均粒径0.1〜8.5μmに粉砕して仮焼粉末とする工程と、
前記仮焼粉末にバインダを添加した後に成形加工を行って成形体を作製する工程と、
前記成形体に対して1000℃〜1350℃で焼成処理を施して多孔質焼結体とする工程と、
を有し、
前記溶融石英粉末又は前記溶融ケイ酸粉末として平均粒径が0.2〜7.5μmであるものを用い、且つ前記溶融アルミナ粉末として平均粒径が0.3〜10μmであるものを用いることを特徴とする。
規格化流量Qs:
Qs≧500μL/分/100mm2/(24V/0.5mm)
=0.104[μL/分/mm/V]
規格化圧力Ps:
Ps≧50kPa/24V
=2.08[kPa/V]
輸送効率係数εs:
εs≧3000/{2.88×105(μA・V)/(μL/分)}
×50kPa
=0.5[(kPa/V)/(μL/min/μA)]
気孔率[%]=(1−嵩密度/見掛密度)×100 …(9)
14…マイクロ流体チップ 16a、16b…基板
18、22…流路 20…反応器
24…ポンプ本体 26…液溜め
28…電気浸透材 30、32…電極
34…排出口 35…突起
36…連通孔 38、40…液体
42…気体
Claims (10)
- 液体と接触した際に表面が帯電する誘電体の多孔質焼結体からなり、電気浸透流ポンプ内で第1電極と第2電極とによって電圧が印加された際に前記第1電極側から前記第2電極側、又はその逆方向の電気浸透流を生じさせる電気浸透材であって、
100重量部の溶融石英又は溶融ケイ酸に対し、BaO成分、SrO成分、CaO成分、TiO2成分、ZrO2成分、Na2O成分、K2O成分の群から選択される少なくとも1種が合計で0.05〜10重量部添加され、
且つ前記溶融石英又は前記溶融ケイ酸の平均粒径が0.2〜7.5μmであることを特徴とする電気浸透材。 - 液体と接触した際に表面が帯電する誘電体の多孔質焼結体からなり、電気浸透流ポンプ内で第1電極と第2電極とによって電圧が印加された際に前記第1電極側から前記第2電極側、又はその逆方向の電気浸透流を生じさせる電気浸透材であって、
100重量部の溶融石英又は溶融ケイ酸に対し、アルミニウムケイ酸塩を含む天然鉱物、BaSiO3、BaTiO3、BaZrO3、SrSiO3、SiCの群から選択される少なくとも1種が合計で0.05〜10重量部添加され、
且つ前記溶融石英又は前記溶融ケイ酸の平均粒径が0.2〜7.5μmであることを特徴とする電気浸透材。 - 請求項2記載の電気浸透材において、前記天然鉱物がアルカリ長石、カオリナイト、葉長石であることを特徴とする電気浸透材。
- 液体と接触した際に表面が帯電する誘電体の多孔質焼結体からなり、電気浸透流ポンプ内で第1電極と第2電極とによって電圧が印加された際に前記第1電極側から前記第2電極側、又はその逆方向の電気浸透流を生じさせる電気浸透材であって、
溶融石英又は溶融ケイ酸と溶融アルミナとの割合がモル%で65〜99.8:35〜0.2であるSiO2−Al2O3の100重量部に対し、BaO成分、SrO成分、CaO成分、TiO2成分、ZrO2成分、Na2O成分、K2O成分の群から選択される少なくとも1種が合計で0.05〜10重量部添加され、
且つ前記溶融石英又は前記溶融ケイ酸の平均粒径が0.2〜7.5μmであり、前記溶融アルミナの平均粒径が0.3〜10μmであることを特徴とする電気浸透材。 - 液体と接触した際に表面が帯電する誘電体の多孔質焼結体からなり、電気浸透流ポンプ内で第1電極と第2電極とによって電圧が印加された際に前記第1電極側から前記第2電極側、又はその逆方向の電気浸透流を生じさせる電気浸透材であって、
溶融石英又は溶融ケイ酸と溶融アルミナとの割合がモル%で65〜99.8:35〜0.2であるSiO2−Al2O3の100重量部に対し、アルミニウムケイ酸塩を含む天然鉱物、BaSiO3、BaTiO3、BaZrO3、SrSiO3、SiCの群から選択される少なくとも1種が合計で0.05〜10重量部添加され、
且つ前記溶融石英又は前記溶融ケイ酸の平均粒径が0.2〜7.5μmであり、前記溶融アルミナの平均粒径が0.3〜10μmであることを特徴とする電気浸透材。 - 請求項5記載の電気浸透材において、前記天然鉱物がアルカリ長石、カオリナイト、葉長石であることを特徴とする電気浸透材。
- 請求項1〜6のいずれか1項に記載の電気浸透材において、平均気孔率が25〜52%、平均気孔径が0.1〜8μmであることを特徴とする電気浸透材。
- 100重量部の溶融石英粉末又は溶融ケイ酸粉末に対し、BaO成分、SrO成分、CaO成分、TiO2成分、ZrO2成分、Na2O成分、K2O成分の群から選択される少なくとも1種、又は、アルミニウムケイ酸塩を含む天然鉱物、BaSiO3、BaTiO3、BaZrO3、SrSiO3、SiCの群から選択される少なくとも1種を含む粉末を合計で0.05〜10重量部添加して混合粉末を得る工程と、
前記混合粉末に対して800℃〜1280℃で仮焼処理を施し、仮焼物を得る工程と、
前記仮焼物を平均粒径0.1〜8.5μmに粉砕して仮焼粉末とする工程と、
前記仮焼粉末にバインダを添加した後に成形加工を行って成形体を作製する工程と、
前記成形体に対して1000℃〜1350℃で焼成処理を施して多孔質焼結体とする工程と、
を有し、
前記溶融石英粉末又は前記溶融ケイ酸粉末として、平均粒径が0.2〜7.5μmであるものを用いることを特徴とする電気浸透材の製造方法。 - 溶融石英又は溶融ケイ酸と溶融アルミナとの割合がモル%で65〜99.8:35〜0.2であるSiO2−Al2O3粉末100重量部に対し、BaO成分、SrO成分、CaO成分、TiO2成分、ZrO2成分、Na2O成分、K2O成分の群から選択される少なくとも1種、又は、アルミニウムケイ酸塩を含む天然鉱物、BaSiO3、BaTiO3、BaZrO3、SrSiO3、SiCの群から選択される少なくとも1種を含む粉末を合計で0.05〜10重量部添加して混合粉末を得る工程と、
前記混合粉末に対して800℃〜1280℃で仮焼処理を施し、仮焼物を得る工程と、
前記仮焼物を平均粒径0.1〜8.5μmに粉砕して仮焼粉末とする工程と、
前記仮焼粉末にバインダを添加した後に成形加工を行って成形体を作製する工程と、
前記成形体に対して1000℃〜1350℃で焼成処理を施して多孔質焼結体とする工程と、
を有し、
前記溶融石英粉末又は前記溶融ケイ酸粉末として平均粒径が0.2〜7.5μmであるものを用い、且つ前記溶融アルミナ粉末として平均粒径が0.3〜10μmであるものを用いることを特徴とする電気浸透材の製造方法。 - 請求項1〜7のいずれか1項に記載された電気浸透材を具備することを特徴とする電気浸透流ポンプ。
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US20130204546A1 (en) * | 2012-02-02 | 2013-08-08 | Ghd Pty Ltd. | On-line pump efficiency determining system and related method for determining pump efficiency |
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