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US4127411A
Expired / Lapsed
US
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Heat resistant and super hard composite materials and a method for producing the same
Assignee: Research Institute for Special Inorganic Materials
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Filing: 1976-12-27
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Granted: 1978-11-28
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Expires: 1996-12-27
Abstract
Abstract Heat resistant and super hard composite materials are produced by mixing not more than 60% by weight of an organosilicon high molecular weight compound, the main skeleton components of which are silicon and carbon or an organosilicon high molecular weight compound, the main skeleton components of which are silicon and carbon and which contains foreign elements other than silicon, carbon, hydrogen and oxygen with not less than 40% by weight of metal material powders consisting mainly of at least one metal element, molding the mixture into a shaped article and baking the shaped article under a non-oxidizing atmosphere at a temperature of lower than the semi-melting point of the above described metal powders.
Inventors
- 👤 Seishi Yajima
- 👤 Toetsu Shishido
- 👤 Mamoru Omori
- 👤 Hideo Kayano
- 👤 Masaaki Hamano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:27
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/05; C22C1/051; C22C1/053; C22C29/00; C22C29/02; C22C29/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
A method for producing a heat resistant and super hard composite materials, which comprises mixing not more than 60% by weight of an organosilicon high molecular weight compound, the main skeleton components of which are silicon and carbon or an organosilicon high molecular weight compound, the main skeletion components of which are silicon and carbon and which contains foreign elements other than silicon, carbon, hydrogen and oxygen with not less than 40% by weight of metal material powders consisting mainly of at least one metal element selected from the group consisting of zirconium, hafnium, titanium, thorium, uranium, chromium, silicon, tungsten, vanadium, molybdenum, manganese, boron, niobium, tantalum or beryllium, molding the mixture into a shaped article and baking the shaped article under a non-oxidizing atmosphere at a temperature of lower than the semi-melting point of the above described metal powders.
Claim 2
Independent Claim
139 words
A method for producing a heat resistant and super hard composite materials, which comprises mixing not more than 60% by weight of an organosilicon high molecular weight compound, the main skeleton components of which are silicon and carbon or an organosilicon high molecular weight compound, the main skeletion components of which are silicon and carbon and which contains foreign elements other than silicon, carbon, hydrogen and oxygen with not less than 40% by weight of metal material powders consisting mainly of at least one metal element selected from the group consisting of zirconium, hafnium, titanium, thorium, uranium, chromium, silicon, tungsten, vanadium, molybdenum, manganese, boron, niobium, tantalum or beryllium, molding the mixture into a shaped article and baking the shaped article under a non-oxidizing atmosphere at a temperature of lower than the semi-melting point of the above described metal powders.
Claim 3
Dependent Claim
14 words
The method as claimed in claim 1, wherein the baking is effected under pressure.
Claim 4
Dependent Claim
14 words
The method as claimed in claim 1, wherein the molding is effected under pressure.
Claim 5
Dependent Claim
27 words
The method as claimed in claim 1, wherein the non-oxidizing atmosphere is vacuum, inert gas, hydrogen gas, CO gas, CO 2 gas, hydrocarbon gas or organosilicon gas.
Claim 6
Dependent Claim
52 words
Heat resistant and super hard composite materials having a Vickers hardness of 1540 to 2170 consisting mainly of at least one of metal carbides and at least one of the metals that form such metal carbides and containing a small amount of a silicate of the above described metals or β-type SiC.
Claim 7
Dependent Claim
52 words
Heat resistant and super hard composite materials having a Vickers hardness of 1540 to 2170 consisting mainly of at least one of metal carbides and at least one of the metals that form such metal carbides and containing a small amount of a silicate of the above described metals or β-type SiC.
Claim 8
Dependent Claim
21 words
Heat resistant materials according to claim 5 wherein said metal carbides have a microhardness of 700 to 5000 kg/mm 2 .
References Cited (Backward Citations)
US3488291A
Cited
DE2236078A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-27 | 1982-05-29 | 1982-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-27 | 1986-05-29 | 1986-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-27 | 1990-05-29 | 1990-11-28 | $7700.00 | Window Closed / Lapsed |