Titanium hafnium carbide-boride metal based ceramic sintered body

摘要

The present invention is characterized by a ceramic sintered body consisting of (1) a primary mixed powder in which boride metal powder the MB2 type or M2B5 type (M indicates the metal) is mixed with a titanium hafnium carbide powder; (2) a secondary mixed powder in which titanium carbonitride is mixed with the above-mentioned primary mixed powder; or (3) a tertiary mixed powder or a quaternary mixed powder in which carbide powder such as hafnium carbide or zirconium carbide is mixed with above-mentioned primary mixed powder or the secondary mixed powder. The resulting sintered bodies have high hardness and toughness.