| 摘要 |
<p>PURPOSE: Provided are a wear resistant member excellent in strength, fracture toughness and rolling fatigue life and suitable for bearing member such as bearing balls, and a manufacturing method thereof. CONSTITUTION: The wear resistant member comprises a silicon nitride sintered body. The silicon nitride sintered body contains 75-97 % by mass of silicon nitride, 0.2-5% by mass of particles of titanium nitride and 2-20% by mass of a grain boundary phase essentially containing Si-R-Al-O-N compound(wherein, R represents a rare earth element). Particles of titanium nitride are 1 micrometer or less in long axis.</p> |
