GB761311A - Process for the production of metal borides or mixtures of metal borides and carbon boride - Google Patents
Process for the production of metal borides or mixtures of metal borides and carbon borideInfo
- Publication number
- GB761311A GB761311A GB2750254A GB2750254A GB761311A GB 761311 A GB761311 A GB 761311A GB 2750254 A GB2750254 A GB 2750254A GB 2750254 A GB2750254 A GB 2750254A GB 761311 A GB761311 A GB 761311A
- Authority
- GB
- United Kingdom
- Prior art keywords
- boron carbide
- borides
- mixtures
- carbon
- atmosphere
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B35/00—Boron; Compounds thereof
- C01B35/02—Boron; Borides
- C01B35/04—Metal borides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Products (AREA)
Abstract
Pure metallic borides or mixtures of metallic borides of the group of metals comprising titanium, vanadium, chromium, zirconium, niobium, molybdenum, hafnium, tantalum and tungsten are produced by heating the oxide or oxides of the group with carbon and boron carbide to at least the metathesis temperature of boron carbide to metal boride and carbon monoxide and in an atmosphere of carbon monoxide, preferably at a pressure of no greater than one atmosphere. The proportions are chosen so that the boron carbide is completely decomposed and substantially no carbides are left. The reaction may be effected under substantial mechanical pressures of at least 500 lbs. to the square inch so as to produce shaped articles of borides and not granular material.ALSO:Mixtures of metallic borides of the group of metals comprising titanium, vanadium, chromium, zirconium, niobium, molybdenum, hafnium, tantalum and tungsten are produced by heating the oxides of the group with carbon and boron carbide to at least the metathesis temperature of boron carbide to metal boride and carbon monoxide and in an atmosphere of carbon monoxide, preferably at a pressure of no greater than one atmosphere. The proportions are chosen so that the boron carbide is completely decomposed and substantially no carbides are left. The reaction may be effected under substantial mechanical pressures of at least 500 lbs. to the square inch so as to produce shaped articles of borides and not granular material. If the proportions are chosen to leave boron carbide behind after the complete decomposition of the oxide then mixtures of metal boride or metal borides and carbon boride are produced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2750254A GB761311A (en) | 1954-09-23 | 1954-09-23 | Process for the production of metal borides or mixtures of metal borides and carbon boride |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2750254A GB761311A (en) | 1954-09-23 | 1954-09-23 | Process for the production of metal borides or mixtures of metal borides and carbon boride |
Publications (1)
Publication Number | Publication Date |
---|---|
GB761311A true GB761311A (en) | 1956-11-14 |
Family
ID=10260612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2750254A Expired GB761311A (en) | 1954-09-23 | 1954-09-23 | Process for the production of metal borides or mixtures of metal borides and carbon boride |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB761311A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1153001B (en) * | 1958-10-29 | 1963-08-22 | United States Borax Chem | Process for the production of borides |
DE1417884B1 (en) * | 1958-05-10 | 1969-09-04 | Pechiney Prod Chimiques Sa | Process for the production of at least 99.5 percent aluminum oxide |
US3535080A (en) * | 1969-02-18 | 1970-10-20 | Norton Co | Apparatus and method for the continuous furnacing of borides,carbides and silicides |
EP0115702A2 (en) * | 1982-12-30 | 1984-08-15 | MOLTECH Invent S.A. | Shaped refractory metal boride articles and method of making them |
US5169832A (en) * | 1988-07-12 | 1992-12-08 | The Dow Chemical Company | Synthesis of refractory metal boride powders of predetermined particle size |
WO2007071327A1 (en) * | 2005-12-20 | 2007-06-28 | H.C. Starck Gmbh | Metal borides |
CN101331083B (en) * | 2005-12-20 | 2011-01-26 | H.C.施塔克有限公司 | Metal borides |
CN106276941A (en) * | 2016-08-26 | 2017-01-04 | 洛阳金鹭硬质合金工具有限公司 | A kind of preparation method of molybdenum boride powder |
-
1954
- 1954-09-23 GB GB2750254A patent/GB761311A/en not_active Expired
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1417884B1 (en) * | 1958-05-10 | 1969-09-04 | Pechiney Prod Chimiques Sa | Process for the production of at least 99.5 percent aluminum oxide |
DE1153001B (en) * | 1958-10-29 | 1963-08-22 | United States Borax Chem | Process for the production of borides |
US3535080A (en) * | 1969-02-18 | 1970-10-20 | Norton Co | Apparatus and method for the continuous furnacing of borides,carbides and silicides |
EP0115702A2 (en) * | 1982-12-30 | 1984-08-15 | MOLTECH Invent S.A. | Shaped refractory metal boride articles and method of making them |
EP0115702A3 (en) * | 1982-12-30 | 1986-06-11 | Alcan International Limited | Shaped refractory metal boride articles and method of making them |
US5169832A (en) * | 1988-07-12 | 1992-12-08 | The Dow Chemical Company | Synthesis of refractory metal boride powders of predetermined particle size |
WO2007071327A1 (en) * | 2005-12-20 | 2007-06-28 | H.C. Starck Gmbh | Metal borides |
CN101331083B (en) * | 2005-12-20 | 2011-01-26 | H.C.施塔克有限公司 | Metal borides |
US8449855B2 (en) | 2005-12-20 | 2013-05-28 | H.C. Starck Gmbh & Co. Kg | Inorganic compounds |
KR101339892B1 (en) * | 2005-12-20 | 2013-12-11 | 하.체. 스타르크 게엠베하 | Metal borides |
CN106276941A (en) * | 2016-08-26 | 2017-01-04 | 洛阳金鹭硬质合金工具有限公司 | A kind of preparation method of molybdenum boride powder |
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