抄録
The properties of the gas nitrosulfurizing layer of steel and the wear of gas nitrosulfurizing steel were discussed. A test piece of S25C steel used as a stator was treated in an atmosphere of the carrier gas containing a NH3 and H2S mixture in the temperature range of 813 to 903 K for 180 min. The surface and cross-sectional hardnesses of gas nitrosulfurizing steel decreased with increasing temperature. The wear test was carried out without lubrication under the condition of 490 kPa using a rotor of S45C steel. It was found that the gas nitrosulfurizing of steel reduced adhesion of the wear plane and improved the wear property of steel.
