| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a propeller shaft having high wear resistance. <P>SOLUTION: The propeller shaft 1 comprises a spline shaft 20 and a spline sleeve 30 fitted to each other, to one of which a DLC coating 24 is applied. The surface roughness Ra of the DLC coating 24 is 0.5 μm or less. <P>COPYRIGHT: (C)2007,JPO&INPIT |
