无机材料学报 ›› 2014, Vol. 29 ›› Issue (10): 1082-1086.DOI: 10.15541/jim20140022

• • 上一篇    下一篇

不同厚度二维VN插入层对TiSiN纳米复合膜微观结构和力学性能的影响

薛增辉1, 李 伟2, 刘 平2, 马凤仓2, 刘新宽2, 陈小红2, 何代华2   

  1. (上海理工大学 1. 机械工程学院; 2. 材料科学与工程学院, 上海 200093)
  • 收稿日期:2014-01-08 修回日期:2014-04-02 出版日期:2014-10-20 网络出版日期:2014-09-22
  • 作者简介:薛增辉(1989–), 男,硕士研究生. E-mail: xin0413zi@163.com
  • 基金资助:
    国家自然科学基金(51101101);上海市自然科学基金(11ZR1424600);上海市研究生创新基金(JWCXSL1302)

Influence of VN 2-D Inserted Layers Thickness on Microstructure and Mechanical Property of TiSiN Nanocomposite Film

XUE Zeng-Hui1, LI Wei2, LIU Ping2, MA Feng-Cang2, LIU Xin-Kuan2, CHEN Xiao-Hong2, HE Dai-Hua2   

  1. (1. School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093,China; 2. School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)
  • Received:2014-01-08 Revised:2014-04-02 Published:2014-10-20 Online:2014-09-22
  • About author:XUE Zeng-Hui. E-mail: xin0413zi@163.com
  • Supported by:
    National Natural Science Foundation of China Program (51101101);National Natural Science Foundation of Shanghai, China (11ZR1424600);The Innovation Fund Project for Graduate Student of Shanghai (JWCXSL1302)

摘要:

采用TiSi复合靶与V靶, 用射频磁控溅射工艺在TiSiN纳米复合膜中插入不同厚度的VN纳米层, 采用X射线衍射仪(XRD)、高分辨透射电子显微镜(HRTEM)和纳米压痕仪研究了VN插入层厚度对TiSiN纳米复合膜的微观结构和力学性能的影响。结果表明: 当TiSiN纳米复合膜中插入VN纳米层厚度较小时, 薄膜由纳米复合结构转变成纳米多层结构, 薄膜硬度降低。继续增加VN层厚度, 薄膜硬度随之升高, 在VN沉积层厚为0.5 nm时薄膜出现连续贯穿多层纳米层、结晶度良好的柱状晶, TiSiN层与VN层呈共格外延生长的结构, 薄膜硬度达到37.2 GPa。随着VN层厚的继续增加, 薄膜的共格外延生长结构消失, 硬度下降。

关键词: TiSiN纳米复合膜, VN插入层, 微观结构, 力学性能

Abstract:

Using V and TiSi targets, a series of TiSiN nanocomposite films being inserted by VN nano-layers with different thickness were prepared by RF magnetron sputtering method. Using X-ray diffraction (XRD), high resolution transmission electron microscope (HRTEM) and nano-indentation techniques, the influences of VN inserted layer thickness on microstructure and mechanical property of TiSiN nanocomposite film were investigated. The results show that, when the VN inserted layer thickness is small, the TiSiN film transforms from nanocomposite structure into nanomultilayered structure, leading to the decrease of hardness. As the VN inserted layers thicken, the hardness of film renewedly increases. When the VN inserted thickness is 0.5 nm, the film presents columnar crystals which continuously crosses through the nanomultilayers. TiSiN and VN layers exhibit coherent epitaxial growth structure, and the hardness accordingly reaches 37.2 GPa. With further increase of the VN inserted layer thickness, the coherent epitaxial growth structure is broken and the hardness of film decreases.

Key words: TiSiN nanocomposite films, VN inserted layers, microstructure, mechanical property

中图分类号: