JP4548340B2 - 水溶媒希土類金属化合物ゾル及びその製造方法、並びにそれを用いたセラミック粉末の製造方法 - Google Patents
水溶媒希土類金属化合物ゾル及びその製造方法、並びにそれを用いたセラミック粉末の製造方法 Download PDFInfo
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- JP4548340B2 JP4548340B2 JP2005515238A JP2005515238A JP4548340B2 JP 4548340 B2 JP4548340 B2 JP 4548340B2 JP 2005515238 A JP2005515238 A JP 2005515238A JP 2005515238 A JP2005515238 A JP 2005515238A JP 4548340 B2 JP4548340 B2 JP 4548340B2
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- 150000002909 rare earth metal compounds Chemical class 0.000 title claims description 26
- 239000000919 ceramic Substances 0.000 title claims description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000000843 powder Substances 0.000 title claims description 19
- 239000003125 aqueous solvent Substances 0.000 title claims description 17
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 42
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 32
- 150000002910 rare earth metals Chemical class 0.000 claims description 30
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid group Chemical group C(CC(O)(C(=O)O)CC(=O)O)(=O)O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 21
- 229910052689 Holmium Inorganic materials 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 150000007942 carboxylates Chemical class 0.000 claims description 11
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 8
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- -1 carboxylate salt Chemical class 0.000 claims description 6
- 150000001735 carboxylic acids Chemical class 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 5
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- 229910052691 Erbium Inorganic materials 0.000 claims description 4
- 229910052693 Europium Inorganic materials 0.000 claims description 4
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 4
- 229910052765 Lutetium Inorganic materials 0.000 claims description 4
- 229910052779 Neodymium Inorganic materials 0.000 claims description 4
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 4
- 229910052772 Samarium Inorganic materials 0.000 claims description 4
- 229910052771 Terbium Inorganic materials 0.000 claims description 4
- 229910052775 Thulium Inorganic materials 0.000 claims description 4
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 4
- 229910052746 lanthanum Inorganic materials 0.000 claims description 4
- 229910052706 scandium Inorganic materials 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 229910000000 metal hydroxide Inorganic materials 0.000 claims 1
- 150000004692 metal hydroxides Chemical class 0.000 claims 1
- 239000002904 solvent Substances 0.000 claims 1
- 239000000243 solution Substances 0.000 description 21
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 15
- 238000003756 stirring Methods 0.000 description 10
- 238000001556 precipitation Methods 0.000 description 9
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 8
- 235000011114 ammonium hydroxide Nutrition 0.000 description 8
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 description 8
- 238000005259 measurement Methods 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 6
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 5
- YWYZEGXAUVWDED-UHFFFAOYSA-N triammonium citrate Chemical compound [NH4+].[NH4+].[NH4+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O YWYZEGXAUVWDED-UHFFFAOYSA-N 0.000 description 5
- 239000001393 triammonium citrate Substances 0.000 description 5
- 235000011046 triammonium citrate Nutrition 0.000 description 5
- 150000001734 carboxylic acid salts Chemical class 0.000 description 4
- ABEVUBXCYLEFPJ-UHFFFAOYSA-K dysprosium(3+);trihydroxide Chemical compound [OH-].[OH-].[OH-].[Dy+3] ABEVUBXCYLEFPJ-UHFFFAOYSA-K 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- QXPQVUQBEBHHQP-UHFFFAOYSA-N 5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d]pyrimidin-4-amine Chemical compound C1CCCC2=C1SC1=C2C(N)=NC=N1 QXPQVUQBEBHHQP-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- LCTWRNOEZKTLGG-UHFFFAOYSA-K holmium(3+);trihydroxide Chemical compound [OH-].[OH-].[OH-].[Ho+3] LCTWRNOEZKTLGG-UHFFFAOYSA-K 0.000 description 3
- WDVGLADRSBQDDY-UHFFFAOYSA-N holmium(3+);trinitrate Chemical compound [Ho+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O WDVGLADRSBQDDY-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001879 gelation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- MAYVZUQEFSJDHA-UHFFFAOYSA-N 1,5-bis(methylsulfanyl)naphthalene Chemical compound C1=CC=C2C(SC)=CC=CC2=C1SC MAYVZUQEFSJDHA-UHFFFAOYSA-N 0.000 description 1
- NGDQQLAVJWUYSF-UHFFFAOYSA-N 4-methyl-2-phenyl-1,3-thiazole-5-sulfonyl chloride Chemical compound S1C(S(Cl)(=O)=O)=C(C)N=C1C1=CC=CC=C1 NGDQQLAVJWUYSF-UHFFFAOYSA-N 0.000 description 1
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 1
- 239000005695 Ammonium acetate Substances 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 235000019257 ammonium acetate Nutrition 0.000 description 1
- 229940043376 ammonium acetate Drugs 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- HELHAJAZNSDZJO-OLXYHTOASA-L sodium L-tartrate Chemical compound [Na+].[Na+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O HELHAJAZNSDZJO-OLXYHTOASA-L 0.000 description 1
- 229940074404 sodium succinate Drugs 0.000 description 1
- ZDQYSKICYIVCPN-UHFFFAOYSA-L sodium succinate (anhydrous) Chemical compound [Na+].[Na+].[O-]C(=O)CCC([O-])=O ZDQYSKICYIVCPN-UHFFFAOYSA-L 0.000 description 1
- 239000001433 sodium tartrate Substances 0.000 description 1
- 229960002167 sodium tartrate Drugs 0.000 description 1
- 235000011004 sodium tartrates Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
- C07C59/235—Saturated compounds containing more than one carboxyl group
- C07C59/245—Saturated compounds containing more than one carboxyl group containing hydroxy or O-metal groups
- C07C59/265—Citric acid
-
- 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
- C04B35/46—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
- C04B35/4682—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 based on BaTiO3 perovskite phase
-
- 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
- C04B35/50—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds
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- 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
- C04B35/624—Sol-gel processing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- 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
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- 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
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- 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
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/449—Organic acids, e.g. EDTA, citrate, acetate, oxalate
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5454—Particle size related information expressed by the size of the particles or aggregates thereof nanometer sized, i.e. below 100 nm
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Nanotechnology (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Ceramic Capacitors (AREA)
- Colloid Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Description
まず、原料とする希土類金属化合物を液体として準備する。この液体は酸性の水溶液でも良いし、アルカリ性水溶液でも良い。また水酸化物を水中に分散させた水性分散液でも良い。この水溶液または水性分散液をよく撹拌しながら、3基以上のカルボキシル基を有するカルボン酸またはカルボン酸塩を、カルボキシル基と希土類金属とのモル比(カルボキシル基/希土類金属)が1.2〜3の範囲になるように添加する。反応を促進させるために加熱しても良い。この時点で希土類金属イオンとカルボン酸が結合した多量体ができる。この多量体の大きさが適当であれば水溶媒希土類金属化合物ゾル(以下、単に「ゾル」と称す。)となるが、大きすぎると沈殿が生じ、液は白濁する。白濁した場合はアンモニア水を加える等の操作をして液のpHを調整する。液のpHを上げることによって多量体の結合が適度に切断され、沈殿を生じない程度の大きさになる。つまり液はゾルとなる。沈殿が生成せず、ゾルとなるためには平均粒子径が略150nm以下である必要がある。この時点で液の粘性が高くなることがあるが(ゲル化)、その場合は純水にて希釈する。
Claims (5)
- 希土類金属化合物が水中に分散している水溶媒希土類金属化合物ゾルであって、前記希土類金属化合物は、3基以上のカルボキシル基を有するカルボン酸またはカルボン酸塩とSc、Y、La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Luより選ばれる少なくとも一種類の希土類金属とを含み、且つ、前記カルボン酸または前記カルボン酸塩のカルボキシル基と前記希土類金属とのモル比(カルボキシル基/希土類金属)が1.2〜3の範囲にあることを特徴とする水溶媒希土類金属化合物ゾル。
- 前記カルボン酸または前記カルボン酸塩が、クエン酸またはクエン酸塩であることを特徴とする請求項1に記載の水溶媒希土類金属化合物ゾル。
- Sc、Y、La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Luより選ばれる少なくとも一種類の希土類金属の酸性水溶液若しくはアルカリ性水溶液、または前記希土類金属の水酸化物を分散させた水性分散液を準備する工程と、前記いずれかの液に、3基以上のカルボキシル基を有するカルボン酸またはカルボン酸塩を、前記カルボキシル基と前記希土類金属とのモル比(カルボキシル基/希土類金属)が1.2〜3の範囲になるように添加する工程と、を備えたことを特徴とする水溶媒希土類金属化合物ゾルの製造方法。
- 前記カルボン酸または前記カルボン酸塩がクエン酸またはクエン酸塩であることを特徴とする請求項3記載の水溶媒希土類金属化合物ゾルの製造方法。
- 請求項1または請求項2に記載の水溶媒希土類金属化合物ゾルを副成分原料として用いることを特徴とするセラミック粉末の製造方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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JP2003351173 | 2003-10-09 | ||
JP2003351173 | 2003-10-09 | ||
PCT/JP2004/014100 WO2005044773A1 (ja) | 2003-10-09 | 2004-09-27 | 水溶媒希土類金属化合物ゾル及びその製造方法、並びにそれを用いたセラミック粉末の製造方法 |
Publications (2)
Publication Number | Publication Date |
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JPWO2005044773A1 JPWO2005044773A1 (ja) | 2007-11-29 |
JP4548340B2 true JP4548340B2 (ja) | 2010-09-22 |
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JP2005515238A Expired - Lifetime JP4548340B2 (ja) | 2003-10-09 | 2004-09-27 | 水溶媒希土類金属化合物ゾル及びその製造方法、並びにそれを用いたセラミック粉末の製造方法 |
Country Status (6)
Country | Link |
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US (2) | US20070010587A1 (ja) |
JP (1) | JP4548340B2 (ja) |
KR (1) | KR100662201B1 (ja) |
CN (1) | CN100473637C (ja) |
TW (1) | TWI286994B (ja) |
WO (1) | WO2005044773A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4548340B2 (ja) * | 2003-10-09 | 2010-09-22 | 株式会社村田製作所 | 水溶媒希土類金属化合物ゾル及びその製造方法、並びにそれを用いたセラミック粉末の製造方法 |
JP2011051851A (ja) * | 2009-09-03 | 2011-03-17 | Hitachi Chem Co Ltd | 希土類フッ化物微粒子分散液、この分散液の製造方法、この分散液を用いた希土類フッ化物薄膜の製造方法、この分散液を用いた高分子化合物/希土類フッ化物複合フィルムの製造方法、及び、この分散液を用いた希土類焼結磁石 |
JP5570011B2 (ja) * | 2010-05-31 | 2014-08-13 | 国立大学法人岐阜大学 | 酸化イットリウム前駆体水系ゾルの製造方法及び酸化イットリウム前駆体水系ゾル |
CN106830067B (zh) * | 2017-04-25 | 2018-11-13 | 安徽中创电子信息材料有限公司 | 一种制取氢氧化钛溶胶的生产装置 |
CN106865603B (zh) * | 2017-04-25 | 2018-11-20 | 安徽中创电子信息材料有限公司 | 一种用于制取氢氧化钛溶液的装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US5407618A (en) * | 1990-08-13 | 1995-04-18 | The Boeing Company | Method for producing ceramic oxide compounds |
JPH08319114A (ja) * | 1995-05-24 | 1996-12-03 | Rhone Poulenc Chim | ゾルの形態で再分散できるイットリウム又はホルミウムを主体とした化合物 |
US20020110517A1 (en) * | 2000-03-28 | 2002-08-15 | Council Of Scientific And Industrial Research | Single step process for the synthesis of nanoparticles of ceramic oxide powders |
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GB2161472B (en) * | 1984-07-12 | 1987-09-03 | Murata Manufacturing Co | Preparing particulate ceramic materials |
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FR2801299B1 (fr) | 1999-11-23 | 2002-06-07 | Rhodia Terres Rares | Dispersion colloidale aqueuse a base d'au moins un compose d'un lanthanide et d'un complexant, procede de preparation et utilisation |
FR2817770B1 (fr) * | 2000-12-08 | 2003-11-28 | Rhodia Terres Rares | Dispersion colloidale aqueuse de phosphate de terre rare et procede de preparation |
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JP3804474B2 (ja) * | 2001-06-22 | 2006-08-02 | 株式会社村田製作所 | セラミック原料粉末の製造方法 |
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2004
- 2004-09-27 JP JP2005515238A patent/JP4548340B2/ja not_active Expired - Lifetime
- 2004-09-27 CN CNB2004800232427A patent/CN100473637C/zh not_active Expired - Lifetime
- 2004-09-27 US US10/569,275 patent/US20070010587A1/en not_active Abandoned
- 2004-09-27 WO PCT/JP2004/014100 patent/WO2005044773A1/ja active IP Right Grant
- 2004-09-27 KR KR1020067002953A patent/KR100662201B1/ko active IP Right Grant
- 2004-10-05 TW TW093130169A patent/TWI286994B/zh active
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2009
- 2009-09-15 US US12/559,738 patent/US8592491B2/en active Active
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Also Published As
Publication number | Publication date |
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WO2005044773A1 (ja) | 2005-05-19 |
CN1835905A (zh) | 2006-09-20 |
US20100004116A1 (en) | 2010-01-07 |
US20070010587A1 (en) | 2007-01-11 |
KR100662201B1 (ko) | 2006-12-27 |
KR20060052981A (ko) | 2006-05-19 |
US8592491B2 (en) | 2013-11-26 |
TW200530126A (en) | 2005-09-16 |
JPWO2005044773A1 (ja) | 2007-11-29 |
TWI286994B (en) | 2007-09-21 |
CN100473637C (zh) | 2009-04-01 |
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