Process for forming a sintered composite boron carbide body
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United States of America Patent
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Jun 10, 1997
Issued Date -
N/A
app pub date -
Dec 12, 1995
filing date -
Dec 12, 1990
priority date (Note) -
Expired
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Abstract
A process for the production of a sintered composite boron carbide body, the process comprising: (a) mixing 40.0 to 99.5 volume % of B.sub.4 C with 0.5 to 60.0 volume % of fine grain powdered SiC, TiC, or both in an organic solvent; (b) drying to form a powder mix; and (c) hot pressing the mix at 1,800.degree. to 2,300.degree. C. for 5 to 600 minutes, whereby the body comprises SiC, TiB.sub.2 or both dispersed in the B.sub.4 C and whereby the body further comprises (i) B.sub.4 C matrix crystal grains having an average grain size of not more than 3.0 .mu.m and (ii) dispersed uniform fine grains of SiC, TiB.sub.2, or both having an average grain size of 1 to 500 nm free of coarse grains and whiskers, the dispersed fine grains being distributed within the matrix crystal grains.
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