High-temperature tribological behavior of a NiCoCrAlY/ZrO2 duplex coating on γ-TiAl alloy

被引：0

作者：

Ding, Zheng ^{[1
]}

Miao, Qiang ^{[1
]}

Liang, Wenping ^{[1
]}

Yang, Zhengang ^{[1
]}

An, Hao ^{[1
]}

Yi, Jinwei ^{[1
]}

Lin, Hao ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 211100, Jiangsu, Peoples R China

来源：

MATERIALS RESEARCH EXPRESS | 2019年 / 6卷 / 08期

基金：

中国国家自然科学基金;

关键词：

NiCoCrAlY/ZrO2 duplex coating; high temperature; gamma-TiAl alloy; friction coefficient; wear mechanism; THERMAL BARRIER COATINGS; TI-6AL-4V ALLOY; TITANIUM-ALLOY; SLIDING WEAR; FRICTION; ALUMINA; BLADES;

D O I：

10.1088/2053-1591/ab28f8

中图分类号：

T [工业技术];

学科分类号：

08 ;

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.

引用

页数：8

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