GB516227A - Improvements in and relating to hard alloys - Google Patents
Improvements in and relating to hard alloysInfo
- Publication number
- GB516227A GB516227A GB17662/38A GB1766238A GB516227A GB 516227 A GB516227 A GB 516227A GB 17662/38 A GB17662/38 A GB 17662/38A GB 1766238 A GB1766238 A GB 1766238A GB 516227 A GB516227 A GB 516227A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metals
- alloys
- mixture
- hydrogen
- june
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
- C22C1/053—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor with in situ formation of hard compounds
- C22C1/055—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor with in situ formation of hard compounds using carbon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
516,227. Alloys. BRITISH THOMSONHOUSTON CO., Ltd. June 14, 1938, No. 17662. Convention date, June 18, 1937. [Class 82 (i)] Alloys of the kind comprising one or more carbides of metals of the sixth group and one or more auxiliary metals at least one of which is an iron group metal, for example alloys of tungsten or molybdenum carbide and cobalt, are made by reducing a finely divided mixture of compounds of the metals, such as oxides of tungsten and cobalt, in a carburizing atmosphere so that carbon is liberated and dispersed between the grains of the metals, the mixture being then carburized by the addition of the required amount of carbon, and sintered. The reducing agent may be town gas, or a mixture thereof with hydrogen, or hydrogen impregnated with hydrocarbon vapour. The carburizing may be effected in dry hydrogen at 1150-1300C. Crushing may be applied to the materials to be reduced, to the reduced material, and to the carburized material. Reference has been directed by the Comptroller to Specification 471,862.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR833555T | 1937-06-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB516227A true GB516227A (en) | 1939-12-28 |
Family
ID=9296619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17662/38A Expired GB516227A (en) | 1937-06-18 | 1938-06-14 | Improvements in and relating to hard alloys |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2160670A (en) |
| FR (1) | FR833555A (en) |
| GB (1) | GB516227A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2509838A (en) * | 1941-08-04 | 1950-05-30 | Lorraine Carbone | Manufacture of tungsten and molybdenum carbides and sintered alloys |
| GB611515A (en) * | 1945-03-10 | 1948-11-01 | Kanthal Ab | An improved heat-resisting machinable alloy for use as electric resistance material for high temperatures as well as for manufacturing details of construction exposed to high temperatures |
| US2607676A (en) * | 1949-06-01 | 1952-08-19 | Kurtz Jacob | Hard metal compositions |
| US4131450A (en) * | 1977-02-04 | 1978-12-26 | Mitsubishi Kinzoku Kabushiki Kaisha | Process for manufacturing cobalt-base reduced powder |
| WO1991007244A1 (en) * | 1989-11-09 | 1991-05-30 | Procedyne Corp. | Spray conversion process for the production of nanophase composite powders |
| US5230729A (en) * | 1989-11-09 | 1993-07-27 | Rutgers, The State University Of New Jersey | Carbothermic reaction process for making nanophase WC-Co powders |
| EP0598040B1 (en) * | 1991-08-07 | 1995-06-07 | Rutgers, The State University Of New Jersey | CARBOTHERMIC REACTION PROCESS FOR MAKING NANOPHASE WC-Co POWDERS |
-
1937
- 1937-06-18 FR FR833555D patent/FR833555A/en not_active Expired
-
1938
- 1938-05-26 US US210271A patent/US2160670A/en not_active Expired - Lifetime
- 1938-06-14 GB GB17662/38A patent/GB516227A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR833555A (en) | 1938-10-25 |
| US2160670A (en) | 1939-05-30 |
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