Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1986-04-17
1989-03-14
Derrington, James
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
264 65, 501 98, C04B 3558
Patent
active
048122807
ABSTRACT:
A process for manufacturing large, fully dense, high purity TiB.sub.2 articles by pressing powders with a sintering aid at relatively low temperatures to reduce grain growth. The process requires stringent temperature and pressure applications in the hot-pressing step to ensure maximum removal of sintering aid and to avoid damage to the fabricated article or the die.
REFERENCES:
patent: 3003885 (1961-10-01), Mandorf
patent: 4268314 (1981-05-01), Montgomery
patent: 4543227 (1985-09-01), Biddulph
Ferber, Effect of Microstructure on the Properties of TiB.sub.2 Ceramics, mmunications of the American Ceramic Society, Jan. 1983.
Federer, Fabrication and Characterization of Liquid Metal-Densified Tib.sub.2 Ceramics, ORNL/TM-9572.
Becher, Effect of Residual Nickel Content on the Grain Size Dependent Mechanical Properties of TiB.sub.2, Journal of Materials Science Letters 5, (1986) 195-197.
Becher Paul F.
Bomar E. S.
Moorhead Arthur J.
Derrington James
Hamel Stephen D.
Hightower Judson R.
Lovingood Katherine P.
The United States of America as represented by the Department of
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