Cr-Si intermetallic compound coatings were coated on an austenitic stainless steel SUS310S substrate by pulsed electriccurrent sintering process to improve its wear and oxidation resistances. The coating was carried out for 0.6-10.8 ks at 1073-1323K at a coating pressure of 60 MPa. As a result of pin-on-disk wear test, the wear property of the coatings was more excellent thanthat of the substrate. The tensile strength of the coatings was 10-20 MPa. These coatings fractured at the interface between thecoatings and the substrate during tensile test. As a result of hot hardness test, the coatings showed higher hardness than thesubstrate, even at high temperature. Hardness of the coatings fell gradually up to the transition temperature of 870 K anddecreased rapidly on further heating. As a result of oxidation-testing for 700 ks at 1123 K, the mass increase of the coatings afteroxidizing was less than that of the substrate. These results indicate that wear resistance and strength at elevated temperaturecould be given to the substrate without deteriorating oxidation resistance.
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