Tribological property and high temperature oxidation behavior of Ni-based alloy

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ÂÛÎÄ×÷ÕߣºÐܵ³Éú Íòéó ÁÖ½¡Ã÷ ÖìºÍ¹ú

ÎÄÕÂÒ³Â룺162 - 166

Key words£ºNi-Cr based alloys£» strengthening phase£» high temperature oxidation£» friction and wear

Abstract: Ni-Cr based alloys were prepared by hot-pressing the mixture of strengthening phases Mo, Al, Ti, and lubricant phase MoS₂. The hardness, tribological properties as well as the high temperature oxidation properties were evaluated, The results show that the strengthening phases can improve the mechanical properties of Ni-Cr based alloy obviously, and the wear and friction properties of Ni-based alloy with strengthening phase can be improved. Its friction coefficient and wear rate rubbed with Al₂O₃ ceramic disk are about 0.4 and 10 -14¤@m3/£¨N¡¤m£©, respectively, and the oxidation process is mainly affected by Cr₂O₃.

»ù½ðÐÅÏ¢£ºthe National Defence Basic Research of China