GB1304291A - - Google Patents
Info
- Publication number
- GB1304291A GB1304291A GB1304291DA GB1304291A GB 1304291 A GB1304291 A GB 1304291A GB 1304291D A GB1304291D A GB 1304291DA GB 1304291 A GB1304291 A GB 1304291A
- Authority
- GB
- United Kingdom
- Prior art keywords
- communicating
- bodies
- porosity
- isostatic
- gas
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
1304291 Isostatic hot pressing CORNING GLASS WORKS 9 Sept 1970 43079/70 Heading C7D [Also in Division C1] Shaped bodies of sinterable particulate material are densified by an initial firing in vacuo or in a gas which is diffusible or soluble with respect to the material of the body, e.g. H 2 to a state in which it is substantially free of inter-connecting porosity (communicating between points spaced on the surface of the body) while still possessing closed porosity (not communicating with the surface of the body), followed by a further firing under the isostatic pressing action of an inert gas which is incapable of diffusing into or permeating the body e.g. helium, argon and nitrogen, at a pressure of at least 1000 psi in immediate contact with the body. Bodies may be formed of refractory metals, refractory metal oxides, graphite, carbides or cermets and an example describes the treatment of alumina.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4307970 | 1970-09-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1304291A true GB1304291A (en) | 1973-01-24 |
Family
ID=10427240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1304291D Expired GB1304291A (en) | 1970-09-09 | 1970-09-09 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1304291A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4276096A (en) | 1977-04-22 | 1981-06-30 | Fried. Krupp Gesellschaft Mit Beschrankter Haftung | Method for producing hard metal bodies of increased wear resistance |
US4541975A (en) * | 1981-06-17 | 1985-09-17 | Kabushiki Kaisha Kobe Seiko Sho | Method for producing high strength sintered silicon carbide |
WO1986004990A1 (en) * | 1985-02-22 | 1986-08-28 | University Patents, Inc. | Electrochemical sensors and methods for their manufacture and use |
US4786374A (en) * | 1985-02-22 | 1988-11-22 | University Patents, Inc. | Electro-chemical sensors and methods for their manufacture and use |
US5445776A (en) * | 1980-10-20 | 1995-08-29 | Kabushiki Kaisha Kobe Seiko Sho | Method for producing high density sintered silicon nitride (Si3 N.sub.4 |
US5603876A (en) * | 1980-10-20 | 1997-02-18 | Kabushiki Kaisha Kobe Seiko Sho | Method for producing high density sintered silicon nitride (SI3 N.sub.4 |
-
1970
- 1970-09-09 GB GB1304291D patent/GB1304291A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4276096A (en) | 1977-04-22 | 1981-06-30 | Fried. Krupp Gesellschaft Mit Beschrankter Haftung | Method for producing hard metal bodies of increased wear resistance |
US5445776A (en) * | 1980-10-20 | 1995-08-29 | Kabushiki Kaisha Kobe Seiko Sho | Method for producing high density sintered silicon nitride (Si3 N.sub.4 |
US5603876A (en) * | 1980-10-20 | 1997-02-18 | Kabushiki Kaisha Kobe Seiko Sho | Method for producing high density sintered silicon nitride (SI3 N.sub.4 |
US4541975A (en) * | 1981-06-17 | 1985-09-17 | Kabushiki Kaisha Kobe Seiko Sho | Method for producing high strength sintered silicon carbide |
WO1986004990A1 (en) * | 1985-02-22 | 1986-08-28 | University Patents, Inc. | Electrochemical sensors and methods for their manufacture and use |
US4627892A (en) * | 1985-02-22 | 1986-12-09 | University Patents, Inc. | Electrochemical sensors and methods for their manufacture and use |
US4786374A (en) * | 1985-02-22 | 1988-11-22 | University Patents, Inc. | Electro-chemical sensors and methods for their manufacture and use |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |