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所属单位：材料科学与技术学院
发表刊物：MATERIALS RESEARCH EXPRESS
关键字：NiCoCrAlY/ZrO2 duplex coating high temperature gamma-TiAl alloy friction coefficient wear mechanism
摘要：A dense NiCoCrAlY/ZrO2 duplex coating was deposited onto the gamma-TiAl alloy by magnetron sputtering technology for the purpose of improving its friction and wear properties at high temperature. Some tests of the ball-on-disk type that were against Si3N4 counterpart, were performed at room temperature and 500 degrees C. The average friction coefficients as well as the wear rates of NiCoCrAlY/ZrO2 duplex coatings were greatly less than those of substrates at both temperatures. Besides, the H/E and H-3/E-2 value of the NiCoCrAlY/ZrO2 coatings were much higher than that of the substrate. The excellent wear-resisting property of NiCoCrAlY/ZrO2 duplex coating was caused by the synergistic effect of its high hardness and outstanding plastic-deformation resistance.
ISSN号：2053-1591
是否译文：否
发表时间：2019-08-01
合写作者：丁铮,梁文萍,杨振刚,安浩,易锦伟,林浩
通讯作者：缪强