Tribological properties of self-lubricating Ta-Cu films

被引：36

作者：

Qin, Wen ^{[1
]}

Fu, Licai ^{[1
]}

Zhu, Jiajun ^{[1
]}

Yang, Wulin ^{[1
]}

Li, Deyi ^{[1
]}

Zhou, Lingping ^{[1
]}

机构：

[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2018年 / 435卷

基金：

中国国家自然科学基金;

关键词：

Ta-Cu film; Magnetron sputtering; Ta2O5; Self-lubricating; X-RAY-DIFFRACTION; THIN-FILMS; NANOCOMPOSITE COATINGS; HIGH-TEMPERATURES; ELASTIC-MODULUS; IN-SITU; STRENGTH; FRICTION; SURFACES; BEHAVIOR;

D O I：

10.1016/j.apsusc.2017.11.220

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, Ta and TaCu films were deposited by using magnetron sputtering, and the tribological properties of the films against Si3N4 balls were investigated under the loads of 2 N and 5 N. The average grain sizes of both films are below 25 nm. Ta and TaCu films have approximate hardness. While the wear rate of TaCu film is much smaller than that of Ta film. Post-wear testing XRD, Raman and XPS revealed the formation of tantalum oxide on the worn surface of both Ta and TaCu films. Tantalum oxidation is effectively lubricating to reduce friction coefficient. So the friction coefficient of both Ta and TaCu film is about 0.45 under different applied loads. Meanwhile, the addition of Cu could increase the toughness of the film, and avoid the generation of wear debris, resulting in a significant increase in wear resistance. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：1105 / 1113

页数：9

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