US4775548A
Expired / Lapsed
US
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Method for producing ceramic composition having low friction coefficient at high operating temperatures
Assignee: Southwest Research Institute
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Filing: 1987-02-25
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Granted: 1988-10-04
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Expires: 2007-02-25
Abstract
Abstract A method for producing a stable ceramic composition having a surface with a low friction coefficient and high wear resistance at high operating temperatures. A first deposition of a thin film of a metal ion is made upon the surface of the ceramic composition and then a first ion implantation of at least a portion of the metal ion is made into the near surface region of the composition. The implantation mixes the metal ion and the ceramic composition to form a near surface composite. The near surface composite is then oxidized sufficiently at high oxidizing temperatures to form an oxide gradient layer in the surface of the ceramic composition.
Inventors
- 👤 James Lankford, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:45
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/0027; C04B41/80
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
104 words
Method for producing a stable ceramic composition having a surface with a low friction coefficient and high wear resistance at high operating temperatures comprising the steps of: a first deposition of a thin film of a metal ion upon said surface of said ceramic composition; a first ion implantation of at least a portion of said metal ion into the near surface region of said composition said implantation mixing said metal ion and said ceramic composition to form a near surface composite; and oxidizing said composite sufficiently at high oxidizing temperatures to form an oxide gradient layer in said surface of said ceramic composition.
Claim 2
Dependent Claim
104 words
Method for producing a stable ceramic composition having a surface with a low friction coefficient and high wear resistance at high operating temperatures comprising the steps of: a first deposition of a thin film of a metal ion upon said surface of said ceramic composition; a first ion implantation of at least a portion of said metal ion into the near surface region of said composition said implantation mixing said metal ion and said ceramic composition to form a near surface composite; and oxidizing said composite sufficiently at high oxidizing temperatures to form an oxide gradient layer in said surface of said ceramic composition.
Claim 3
Dependent Claim
16 words
The method of claim 1, wherein said high oxidizing temperatures are in excess of 600° C.
Claim 4
Dependent Claim
11 words
The method of claim 1, wherein said metal ion is cobalt.
Claim 5
Dependent Claim
149 words
Method for producing a stable ceramic composition having a surface with a low friction coefficient and high wear resistance at high operating temperatures comprising the steps of: a first deposition of a thin film of a first metal ion upon said surface of said ceramic composition; a first ion implantation of at least a portion of said first metal into the near surface region of said cermic composition; a second deposition of a thin film of a second metal ion upon said surface of said ceramic composition; a second ion implantation of at least a portion of said second metal into said near surface region of said ceramic composition, said second implantation mixing said first metal, said second metal, and said ceramic composition to form a composite; and oxidizing said composite sufficiently at high oxidizing temperatures to form an oxide gradient layer in said surface of said ceramic composition.
Claim 6
Dependent Claim
149 words
Method for producing a stable ceramic composition having a surface with a low friction coefficient and high wear resistance at high operating temperatures comprising the steps of: a first deposition of a thin film of a first metal ion upon said surface of said ceramic composition; a first ion implantation of at least a portion of said first metal into the near surface region of said cermic composition; a second deposition of a thin film of a second metal ion upon said surface of said ceramic composition; a second ion implantation of at least a portion of said second metal into said near surface region of said ceramic composition, said second implantation mixing said first metal, said second metal, and said ceramic composition to form a composite; and oxidizing said composite sufficiently at high oxidizing temperatures to form an oxide gradient layer in said surface of said ceramic composition.
Claim 7
Dependent Claim
28 words
The method of claim 4, wherein said first and said second metal ions are any of the following: cobalt, nickel, titanium, niobium, silver, zinc, copper, zirconium, or ytrium.
Claim 8
Dependent Claim
16 words
The method of claim 4, wherein said high oxidizing temperatures are in excess of 600° C.
Claim 9
Dependent Claim
12 words
The method of claim 6, wherein said first metal ion is cobalt.
Claim 10
Dependent Claim
16 words
The method of claim 6, wherein said high oxidizing temperature is in excess of 600° C.
References Cited (Backward Citations)
No citation records indexed.
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