无机材料学报 ›› 2013, Vol. 28 ›› Issue (2): 195-200.DOI: 10.3724/SP.J.1077.2013.12196 CSTR: 32189.14.SP.J.1077.2013.12196

• • 上一篇    下一篇

TiN/VCN多层膜的力学性能及摩擦磨损性能研究

曹 峻, 许俊华, 喻利花   

  1. (江苏科技大学 江苏省先进焊接技术重点实验室, 镇江 212003)
  • 收稿日期:2012-03-29 修回日期:2012-07-14 出版日期:2013-02-10 网络出版日期:2013-01-23
  • 作者简介:曹 峻(1986–), 男, 硕士研究生. E-mail: caojun393@163.com
  • 基金资助:
    国家自然科学基金(51074080);江苏省自然科学基金(BK2008240);江苏省研究生科研创新计划(CXLX11_0292)

Mechanical Properties and Tribological Performance of TiN/VCN Multilayers

CAO Jun, XU Jun-Hua, YU Li-Hua   

  1. (Jiangsu Key Laboratory of Advanced Welding Technology, Jiangsu University of Science and Technology, Zhenjiang 212003, China)
  • Received:2012-03-29 Revised:2012-07-14 Published:2013-02-10 Online:2013-01-23
  • About author:CAO Jun. E-mail: caojun393@163.com
  • Supported by:
    National Natural Science Foundation of China (51074080);Natural Science Foundation of Jiangsu Province (BK2008240);Scientific Research Innovation Program of Graduate Students of JiangSu Province (CXLX11_0292)

摘要:

采用多靶磁控溅射技术, 制备了TiN、VCN单层膜及调制比为1:1的系列调制周期的TiN/VCN多层膜。利用X射线衍射仪、纳米压痕仪、高温摩擦磨损测试仪和扫描电子显微镜研究了各种薄膜的微结构、力学性能及室温和高温摩擦磨损性能。研究表明: TiN/VCN多层膜以δ-NaCl面心立方结构为主; TiN/VCN多层膜的最大硬度值为28.71 GPa, 约为按混合法则计算所得理论硬度值的1.23倍, 并据此分析了TiN/VCN多层膜的致硬机理; TiN/VCN多层膜在室温下摩擦系数与TiN单层膜摩擦系数相近, 但当环境温度为700℃时, 摩擦系数约0.4, 较TiN单层膜(0.52)低。TiN/VCN多层膜室温和高温下的磨损率相比TiN单层膜减小了约3×10-14 m3/(N·m)。从晶体化学和热测量方法角度讨论了TiN/VCN多层膜的Magnéli相V2O5的润滑机制。

关键词: TiN/VCN, 磁控溅射, 力学性能, 摩擦磨损性能, Magné, li相

Abstract:

Monolithic TiN, VCN films and TiN/VCN nano-multilayer films with different modulation periods were prepared by magnetron sputtering. Microstructures, mechanical properties and friction properties at room and high temperature of these films were investigated by X-ray diffraction (XRD), nano-indentation, and CSM high temperature ball-on-disc tribometer. The results show that the TiN/VCN multilayer films are mainly nanocrystalline with δ-NaCl fcc structure. Maximum hardness of TiN/VCN multilayer films is 28.71 GPa, about 23% higher than the value calculated by the rule of mixtures. Based on these data, a mechanism of the superhardness in this system is proposed. Friction coefficients of TiN/VCN multilayers are similar to that of TiN films at room temperature, but lower than that of TiN films when testing temperature is increased to 700℃. Wear rates of TiN/VCN multilayers at room and high temperature decrease about 3×10-14 m3/(N·m) comparing to that of single layer film. The lubrication mechanism of Magnéli phase (V2O5) is discussed in terms of crystal chemistry and thermal measurement methods. In conclusion, compared to TiN films, the friction and wear properties of TiN/VCN multilayer films are greatly improved.

Key words: TiN/VCN, magnetron sputtering, mechanical properties, friction properties, Magn&#x000e9, li phase

中图分类号: