BORON CARBIDE-TITANIUM DIBORIDE SINTERED COMPACT, AND PRODUCTION METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a boron carbide-titanium diboride sintered compact which has high four point bending strength, and to provide a production method therefor. SOLUTION: The boron carbide-titanium diboride sintered compact is obtained by sintering a powdery mixture of boron carbide (B4 C) powder, titanium dioxide (TiO2 ) powder, and carbon (C) powder while they are reacted under the compacting condition. The sintered compact consists of 95 to 70 mol% boron carbide and 5 to 30 mol% titanium diboride, and the maximum grain diameter of the boron carbide is <=5 μm.