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Spheroidal graphite iron is chosen as a substrate material on which plasma W Mo and Ni Cr surface alloying are carried out by the Xu-Tec process. The experimental results show that W Mo surface alloying increases the surface hardness of the cast iron from approximately 200 to 1500 HV while Ni Cr alloying enhances the surface hardness to 600 HV or above and also the corrosion-resistance of the...
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