Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1981-12-18
1983-12-06
Weston, Caleb
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
501 87, 501 88, 501 92, 501 91, 501 96, B32B 3100, C04B 3912
Patent
active
044191618
ABSTRACT:
In accord with the present invention, a composite ceramic article may be produced by joining separate components of ceramic materials with a cement or brazing compound of finely-divided metal borides, such as Mo.sub.2 B.sub.5, MoB.sub.2, TiB.sub.2, GeB.sub.2, ZrB.sub.2, SmB.sub.6, NbB.sub.2, HfB, VB.sub.2, WB.sub.2 or TaB.sub.2. A particularly useful metal boride for use with silicon carbide is Mo.sub.2 B.sub.5.
If the metal carbide parts or components to be joined are sintered, the metal boride cement is selected to have a melting point within 150.degree. C., but less than the sintering temperature of the metal carbide.
If the metal carbide parts or components to be joined are unsintered, or an unsintered component is to be joined to a sintered component, the metal boride cement is selected to have a melting point slightly higher than the sintering temperature of the metal carbide components to be joined.
REFERENCES:
patent: 2806800 (1957-09-01), Glaser
patent: 3657592 (1972-04-01), Kellar
Kennecott Corporation
Sahr R. Lawrence
Weston Caleb
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