Effect of Trace Ag on Tribological Properties of TiAlN coating

被引：0

作者：

Wang Z. ^{[1
]}

Feng C. ^{[2
]}

Shi C. ^{[1
]}

Liu G. ^{[1
]}

Wang J. ^{[1
]}

机构：

[1] School of Materials, Nanchang Hang kong University, Nanchang

[2] School of Materials, Shenyang University of Aeronautics and Astronautics, Shenyang

来源：

Mocaxue Xuebao/Tribology | 2020年 / 40卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Abrasive wear; Adhesion; Adhesion wear; Arc ion plating; Coating;

D O I：

10.16078/j.tribology.2020004

中图分类号：

学科分类号：

摘要：

TiAlN and TiAlAgN coatings with different Ag contents were prepared by arc ion plating with Ti50Al50, Ti50Al49Ag1, Ti50Al45Ag5 alloy targets in this paper. The tribological properties were studied by using a ball-on-disk tribo-meter at room temperature, 200 ℃, 400 ℃ and 600 ℃.The surface morphology, microstructure, hardness and adhesion of the coatings before and after wear were determined by scanning electron microscope, X-ray diffraction, microhardness tester, surface profiler and scratch tester. The results showed that the thickness of TiAlN, TiAlAgN(0.12%Ag, atomic percentage), TiAlAgN(0.30%Ag, atomic percentage) coating was 4.18 μm, 5.31 μm and 4.69 μm. The hardness was HV0.2 2 049.4, HV0.2 1 672.9, HV0.2 1 398.5, respectively. The diffraction peaks of TiAlN and TiAlAgN coatings were the same as those of FCC TiN, and the preferential orientation of N(220) for TiAlN coating was found after adding Ag. The wear mechanism of the three coatings at elevated temperatures was identified as adhesive wear and abrasive wear. At room temperature, the friction coefficient of TiAlN coating was about 0.3, which was lower than that of the other two coatings. The wear rate of the three coatings was higher at 200 ℃, and the best wear resistance was obtained at 400 ℃. In addition, as the Ag contents were between 0.12%~0.30%, the adhesion of the coating decreased. Copyright ©2020 Tribology. All rights reserved.

引用

页码：634 / 646

页数：12

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