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 Title: |
US4598024:
Dispersion toughened ceramic composites and method for making same
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Stinton, David P.; Knoxville, TN
Lackey, Walter J.; Oak Ridge, TN
Lauf, Robert J.; Oak Ridge, TN
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| Assignee: |
The United States of America as represented by the United States Department of Energy, Washington, DC
other patents from UNITED STATES OF AMERICA, DEPARTMENT OF ENERGY (597195) (approx. 6,712)
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| Published / Filed: |
1986-07-01
/ 1984-09-28
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| Application Number: |
US1984000655488
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| IPC Code: |
Advanced:
C04B 41/50;
C04B 41/87;
C23C 16/30;
Core:
C04B 41/45;
more...
IPC-7:
B32B 9/04;
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| U.S. Class: |
Current:
428/448;
427/249.19;
428/450;
428/698;
Original:
428/448;
427/249;
427/255;
427/255.1;
428/450;
428/698;
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| Field of Search: |
428/426,428,432,446,448,450,698
427/249,255,255.1
264/081
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| Government Interest: |
This invention was made as the result of work under Contract W-7405-ENG-26 between Union Carbide Corporation, Nuclear Division, and the United States Department of Energy.
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| Priority Number: |
| 1984-09-28 |
US1984000655488 |
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| Abstract: |
Ceramic composites exhibiting increased fracture toughness are produced by the simultaneous codeposition of silicon carbide and titanium disilicide by chemical vapor deposition. A mixture of hydrogen, methyltrichlorosilane and titanium tetrachloride is introduced into a furnace containing a substrate such as graphite or silicon carbide. The thermal decomposition of the methyltrichlorosilane provides a silicon carbide matrix phase and the decomposition of the titanium tetrachloride provides a uniformly dispersed second phase of the intermetallic titanium disilicide within the matrix phase. The fracture toughness of the ceramic composite is in the range of about 6.5 to 7.0 MPa.sqroot.m which represents a significant increase over that of silicon carbide.
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| Attorney, Agent or Firm: |
Larcher, Earl L. ;
Hamel, Stephen D. ;
Hightower, Judson R. ;
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| Primary / Asst. Examiners: |
Pertilla, Theodore E.;
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| INPADOC Legal Status: |
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| Family: |
Show 11 known family members
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First Claim:
Show all 7 claims |
We claim:
1. A ceramic structure comprising a ceramic substrate capable of withstanding a temperature of at least about 1,200° C. and -1,500° C. and a ceramic composite coating thereon, said coating comprising a matrix phase of silicon carbide and an intermetallic phase of titanium disilicide uniformly dispersed within said matrix.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 10 U.S. patent(s) that reference this one
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