ガス浸硫窒化した鋼の摩耗

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  • Wear Property of Gas Nitrosulfurizing Steel
  • ガス シンリュウ チッカシタ コウ ノ マモウ

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The properties of the gas nitrosulfurizing layer of steel and the wear of gas nitrosulfurizing steel were discussed.<BR>A testing piece of S 25 C 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.<BR>It was confirmed by X-ray diffraction that the surface products were FeS, Fe1−xS, Fe3N and Fe4N at each temperature.<BR>The surface hardness and cross-sectional hardness of gas nitrosulfurizing steel decreased with increasing temperature.<BR>The wear test was carried out without lubrication under the condition of 490 kPa and a combination with a rotor of S 45 C steel.<BR>It was recoginized that the gas nitrosulfurizing of steel reduced adhesivity of the wear plane and improved the wear property of steel.

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