EP0178169A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method for the production of a sliding member
Assignee: Toshiba Corp
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Filing: 1985-10-09
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Granted: —
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Expires: 2005-10-09
Abstract
Abstract A sliding member exhibiting excellent mechanical strength, resistance to thermal shock, and resistance to corrosion at elevated temperature is produced by a process of manufacture which comprises firing a shaped mass of silicon nitride powder obtained by the silica reduction method and cutting the resultant sintered ceramic mass in a prescribed shape by machining.
Inventors
- 👤 Shigeo Suzuki
- 👤 Kazuyuki Yasuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 06:22
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/584; C04B35/593; C04B35/5935; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/043; F16C33/30
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
38 words
(1) A sliding member, characterized by a process of manufacture which comprises firing a shaped mass of silicon powder obtained by the silica reduction method and cutting a resultant sintered ceramic mass in a prescribed shape by machining.
Claim 2
Dependent Claim
73 words
(2) A sliding member according to Claim 1, wherein said silicon nitjride is obtained by mixing silicon dioxide powder and carbon powder of excess amount realtive to the reaction equivalent weight in conjunction with a small amount of a reaction catalyst selected from among silicon powder, silicon nitride powder, and silicon carbide powder and roasting the resultant mixture in an atmosphere of nitrogen at a temperature in the range of 1,350°C to 1,600°C.
Claim 3
Dependent Claim
31 words
(3) A sliding member according to Claim 1, wherein said dilicon nitride powder comprises at least 95% of d-phase silicon nitride and has an average particle diameter less than 1 um.
Claim 4
Dependent Claim
24 words
(4) A sliding member according to Claim 1, wherein said silicon nitride powder contains not more than 10% by weight of a sintering aid.
Claim 5
Dependent Claim
39 words
(5) A sliding member according to Claim 1, wherein said silicon nitride powder contains 0.5 to 10% by weight of yttrium oxide (Y 0 ) and 0.1 to 10% by weight of aluminum oxide (Al 2 O 3 ).
Claim 6
Dependent Claim
27 words
(6) A sliding member according to Claim 1, wherein said firing is carried out in an inert atmosphere under pressure of 1.5 to 50 kg/cm 2 .
Claim 7
Dependent Claim
20 words
(7) A sliding member according to Claim 1, wherein said firing is effected by the use of a hot press.
Claim 8
Dependent Claim
36 words
(8) A sliding member according to Claim 1, wherein said sintered ceramic mass out in said prescribed shape by machining is subjected to a heat treatment at 800°C to 1,200 C for one to 100 hours.
Claim 9
Dependent Claim
15 words
(9) A sliding member according to Claim 1, wherein said sliding member is a bearing.
References Cited (Backward Citations)
No citation records indexed.
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