Boron carbide ceramic and manufacturing method thereof

Details Boron carbide ceramic and manufacturing method thereof Boron carbide ceramic and manufacturing method thereof

2011-02-22

2011-02-22

Group, Karl E (Department: 1731)

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

C501S095200, C501S095300, C264S434000, C264S640000, C264S641000, C264S667000

Reexamination Certificate

active

07893000

ABSTRACT:
Boron carbide ceramics produced by spark sintering methods have more desirable mechanical properties than conventionally produced carbides. The boron carbide ceramics include amorphous boron, amorphous carbon, and Al2O3powder as a sintering aid. The boron carbides may also contain a carbon nano fiber in a nearly homogeneously dispersed state. The sintered compact has a relative density of a boron carbide ceramic of approximately not less than 99%. The boron carbide ceramics are prepared preferably by subjecting a mixed powder of the starting raw materials and the carbon nano fiber to simultaneous synthesis and sintering using the spark plasma sintering method.

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