Method of making aluminum-resistant titanium diboride articles

Plastic and nonmetallic article shaping or treating: processes – Including step of generating heat by friction

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264 63, 264570, 501 92, 501 96, 423297, C04B 3564, C04B 3556, C01B 3504, F27B 904

Patent

active

045928827

ABSTRACT:
High strength titanium diboride (TiB.sub.2) articles which are obtained by sintering articles preformed from TiB.sub.2 powder mixed with epoxy resin by means of isostatic molding using sintering temperatures found to be a critical variable for achieving maximum strength. Resistance to aluminum attack is achieved by removing contaminating oxides, nitrides, and carbides of titanium by selecting either annealing the sintered article in a boron nitride (BN) pack or by including a small amount of BN or elemental boron in the original TiB.sub.2 powder, such that the finished article is substantially free of such contaminants.

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