US4174971A
Expired / Lapsed
US
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Silicon carbide body containing a molybdenum disilicide alloy
Assignee: Bulten Kanthal AB
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Filing: 1978-06-22
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Granted: 1979-11-20
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Expires: 1998-06-22
Abstract
Abstract A silicon carbide body wherein the silicon carbide forms a skeleton which is pore free in itself, occupies at least 70 percent by volume of the body volume and has the intercommunicating cavities thereof filled entirely by an almost porefree molybdenum disilicide alloy.
Inventors
- 👤 Nils G. Schrewelius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:37
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/565; C04B35/573; C04B41/00; C04B41/45; C04B41/50; C04B41/51; C04B41/5133; C04B41/80; C04B41/81; C04B41/85; C04B41/88; H; H01; H01C; H01C7/00; H01C7/02; H01C7/022; H05; H05B; H05B3/00; H05B3/10; H05B3/12; H05B3/14; H05B3/148; H05B2203/00; H05B2203/018
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
71 words
A silicon carbide body comprising a skeleton consisting of silicon carbide particles, said skeleton having additional amounts of silicon carbide formed in situ and bonded therein, and resulting from the reaction of a pyrolyzed carbonaceous source and silicon in stoichiometric amounts, thereby providing a body with intercommunicating cavities in which the silicon carbide occupies at least 70% by volume of the body, said cavities being filled entirely by a molybdenum-silicon alloy.
Claim 2
Dependent Claim
71 words
A silicon carbide body comprising a skeleton consisting of silicon carbide particles, said skeleton having additional amounts of silicon carbide formed in situ and bonded therein, and resulting from the reaction of a pyrolyzed carbonaceous source and silicon in stoichiometric amounts, thereby providing a body with intercommunicating cavities in which the silicon carbide occupies at least 70% by volume of the body, said cavities being filled entirely by a molybdenum-silicon alloy.
Claim 3
Dependent Claim
47 words
A body as claimed in claim 1, wherein said additional amounts of silicon carbide formed in situ result from the reaction of silicon with a pyrolyzable carbonaceous solution capable of providing at least 0.15 grams of carbon per cubic centimeter of the solution, at the pyrolysis thereof.
Claim 4
Dependent Claim
16 words
A body as claimed in claim 2, wherein said pyrolyzable carbonaceous solution is a sugar solution.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-19 | 1983-05-21 | 1983-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-19 | 1987-05-21 | 1987-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-19 | 1991-05-21 | 1991-11-20 | $7700.00 | Window Closed / Lapsed |