| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bearing made of silicon nitride ceramics having excellent resistance to wear, heat, and shock. <P>SOLUTION: In this bearing forming at least a part of a slide face by silicon nitride ceramics sintered body containing silicon nitride as a main component, heat conductivity of the silicon nitride ceramics sintered body at normal temperature is 50 W/(m x K) or more. The silicon nitride ceramics sintered body is suitable for use as a bearing of hydraulic machinery such as a pump and a water turbine, in particular, is favorable for use as a slide bearing of a stand-by operation pump. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
