BR9000642A - Po de pentoxido de tantalo e processo para sua preparacao - Google Patents
Po de pentoxido de tantalo e processo para sua preparacaoInfo
- Publication number
- BR9000642A BR9000642A BR909000642A BR9000642A BR9000642A BR 9000642 A BR9000642 A BR 9000642A BR 909000642 A BR909000642 A BR 909000642A BR 9000642 A BR9000642 A BR 9000642A BR 9000642 A BR9000642 A BR 9000642A
- Authority
- BR
- Brazil
- Prior art keywords
- tantalo
- preparation
- pentoxide powder
- pentoxide
- powder
- Prior art date
Links
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 title 1
Classifications
-
- 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
- H01G4/10—Metal-oxide dielectrics
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G35/00—Compounds of tantalum
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/20—Powder free flowing behaviour
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3904292A DE3904292A1 (de) | 1989-02-14 | 1989-02-14 | Hochreines tantalpentoxid sowie verfahren zu dessen herstellung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR9000642A true BR9000642A (pt) | 1991-01-15 |
Family
ID=6373989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR909000642A BR9000642A (pt) | 1989-02-14 | 1990-02-13 | Po de pentoxido de tantalo e processo para sua preparacao |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5068097A (pt) |
| JP (1) | JPH02248325A (pt) |
| AU (1) | AU633047B2 (pt) |
| BE (1) | BE1002754A3 (pt) |
| BR (1) | BR9000642A (pt) |
| DD (1) | DD291978A5 (pt) |
| DE (1) | DE3904292A1 (pt) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6338832B1 (en) * | 1995-10-12 | 2002-01-15 | Cabot Corporation | Process for producing niobium and tantalum compounds |
| US5635146A (en) * | 1995-11-30 | 1997-06-03 | Osram Sylvania Inc. | Method for the dissolution and purification of tantalum pentoxide |
| US5707599A (en) * | 1996-02-13 | 1998-01-13 | Santiam Electroactive Materials | Process for purifying tantalum oxide and other metal oxides |
| US6010676A (en) * | 1997-09-12 | 2000-01-04 | Osram Sylvania Inc. | Method for making a highly pure tantalum compound |
| US6348113B1 (en) | 1998-11-25 | 2002-02-19 | Cabot Corporation | High purity tantalum, products containing the same, and methods of making the same |
| WO2003055805A1 (en) * | 2001-12-27 | 2003-07-10 | Mitsui Mining & Smelting Co.,Ltd. | Powder of tantalum oxide or niobium oxide, and method for production thereof |
| JP4202195B2 (ja) * | 2003-06-10 | 2008-12-24 | 三井金属鉱業株式会社 | 水酸化タンタル、水酸化ニオブ、酸化タンタル、酸化ニオブ、およびこれらの製造方法 |
| JP4949960B2 (ja) * | 2007-07-27 | 2012-06-13 | Ｄｏｗａホールディングス株式会社 | 酸化タンタルの製造方法 |
| JP2009073675A (ja) * | 2007-09-18 | 2009-04-09 | Mitsui Mining & Smelting Co Ltd | 金属酸化物粉及びその製造方法 |
| JP5137594B2 (ja) * | 2008-01-18 | 2013-02-06 | 三井金属鉱業株式会社 | 酸化タンタル |
| CN114057227B (zh) * | 2021-12-15 | 2023-09-19 | 宁夏东方钽业股份有限公司 | 一种低碳高纯五氧化二钽粉末及其制备方法和用途 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1018036B (de) * | 1955-10-25 | 1957-10-24 | Elektrometallurgie M B H Ges | Verfahren zur Gewinnung von reinen Tantal- und/oder Niobverbindungen |
| US2950966A (en) * | 1958-06-20 | 1960-08-30 | Nat Distillers Chem Corp | Recovery of tantalum values |
| US3909241A (en) * | 1973-12-17 | 1975-09-30 | Gte Sylvania Inc | Process for producing free flowing powder and product |
| JPS5110197A (en) * | 1974-07-16 | 1976-01-27 | Ishihara Sangyo Kaisha | Suisankaniobu mataha suisankatantaruno seizohoho |
| JPS5815032A (ja) * | 1981-07-17 | 1983-01-28 | Toshiba Corp | 五酸化タンタルの製造装置 |
| DE3428788C2 (de) * | 1983-08-11 | 1986-07-10 | Günter J. 8510 Fürth Bauer | Verfahren zum kontinuierlichen Herstellen von fluoridarmen Tantal- oder Niob-Pentoxiden |
| US4661423A (en) * | 1984-02-01 | 1987-04-28 | Tokyo Shibaura Denki Kabushiki Kaisha | Fuel cell electrolyte matrix and method for manufacturing the same |
| US4861747A (en) * | 1984-06-29 | 1989-08-29 | Exxon Research And Engineering Company | Catalysts comprising ruthenium on titania surface modified with group VA oxide of vanadium, niobium or tantalum |
| JPS61146717A (ja) * | 1984-12-18 | 1986-07-04 | Sumitomo Chem Co Ltd | タンタルの精製方法 |
| JPH0233654B2 (ja) * | 1985-07-26 | 1990-07-30 | Kagaku Gijutsucho Mukizaishitsu Kenkyushocho | Ta2o5*nh2oryushinoseizohoho |
| US4741894A (en) * | 1986-06-03 | 1988-05-03 | Morton Thiokol, Inc. | Method of producing halide-free metal and hydroxides |
| JPS63156013A (ja) * | 1986-12-17 | 1988-06-29 | Sumitomo Chem Co Ltd | 金属化合物中に含有された微量フツ素の除去方法 |
| JPH01176226A (ja) * | 1987-12-28 | 1989-07-12 | Central Glass Co Ltd | 酸化ニオブまたは酸化タンタルの改質方法 |
| JPH01313333A (ja) * | 1988-06-13 | 1989-12-18 | Central Glass Co Ltd | 高純度水酸化ニオブまたは水酸化タンタルの製造方法 |
-
1989
- 1989-02-14 DE DE3904292A patent/DE3904292A1/de active Granted
-
1990
- 1990-02-02 US US07/473,731 patent/US5068097A/en not_active Expired - Lifetime
- 1990-02-07 BE BE9000142A patent/BE1002754A3/fr not_active IP Right Cessation
- 1990-02-12 DD DD90337784A patent/DD291978A5/de not_active IP Right Cessation
- 1990-02-13 BR BR909000642A patent/BR9000642A/pt not_active IP Right Cessation
- 1990-02-13 JP JP2029743A patent/JPH02248325A/ja active Pending
- 1990-02-14 AU AU49785/90A patent/AU633047B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02248325A (ja) | 1990-10-04 |
| AU633047B2 (en) | 1993-01-21 |
| BE1002754A3 (fr) | 1991-05-28 |
| AU4978590A (en) | 1990-08-23 |
| DE3904292C2 (pt) | 1991-01-17 |
| DE3904292A1 (de) | 1990-08-16 |
| DD291978A5 (de) | 1991-07-18 |
| US5068097A (en) | 1991-11-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FB20 | Grant procedure suspended (art. 20) | ||
| FB19 | Grant procedure suspended (art. 19) | ||
| FB36 | Technical and formal requirements: requirement - article 36 of industrial property law | ||
| FF | Decision: intention to grant | ||
| FG9A | Patent or certificate of addition granted | ||
| B21A | Patent or certificate of addition expired [chapter 21.1 patent gazette] |
Free format text: PATENTE EXTINTA EM 13/02/2010 |