高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (8): 1574.

• 研究论文 • 上一篇    下一篇

纳米Au-TiO2复合薄膜的溶胶-凝胶法制备、表征和性能

陈云霞, 刘维民, 张平余, 邵士俊   

  1. 中国科学院兰州化学物理研究所固体润滑国家重点实验室, 兰州 730000
  • 收稿日期:2001-06-18 出版日期:2002-08-24 发布日期:2002-08-24
  • 通讯作者: wmliu@ns.lzb.ac.cn
  • 作者简介:刘维民(1962年出生),男,研究员,博士生导师,从事纳米润滑材料研究.E-mail:wmliu@ns.lzb.ac.cn
  • 基金资助:

    国家自然科学杰出青年基金(批准号:59825116)资助

Preparation, Characterization and Properties of Nano Au-TiO2 Composite Thin Films by Sol-Gel Process

CHEN Yun-Xia, LIU Wei-Min, ZHANG Ping-Yu, SHAO Shi-Jun   

  1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
  • Received:2001-06-18 Online:2002-08-24 Published:2002-08-24

摘要: 用溶胶-凝胶法制备了纳米Au-TiO2复合薄膜.X射线衍射、X射线光电子能谱、原子力显微镜、紫外-可见光谱及摩擦磨损实验研究表明,复合薄膜均匀致密,Au以纳米晶粒形式均匀、不连续分散镶嵌于TiO2基体中,纳米Au粒径为14~25nm;复合薄膜在可见光区有较强的吸收,吸收峰位置和强度与烧结温度和金的添加量有关;复合薄膜具有良好的抗磨减摩性能,在1N负荷下,摩尔分数为5%的Au-TiO2薄膜的摩擦系数仅为0.09~0.10,耐磨寿命多于2000滑动周次.

关键词: Au-TiO2复合薄膜, 溶胶-凝胶法, 光学和摩擦学性能

Abstract: Nano Au-TiO2 composite thin films were successfully fabricated by a facile sol gel process. The morphology, mircrostructure and properties of composite thin films were investigated via atomic force microscopy, X-ray diffractometry, X-ray photoelectron spectroscopy, UV-Vis optical absorption spectroscopy and one way reciprocating tribometer. The surfaces of thin film were uniform, compact and crack free. Au particles were well dispersed in TiO2 matrix with a size of 14-25 nm in diameter. The composite thin films have a strong optical absorption. The peak position and intensity were related to the sintered temperature and the Au content. The composite thin films sliding against AISI 52100 steel ball displayed an excellent wear resistance and friction reduction reduction performance. With a 5.0%(molar fraction) Au, the friction coefficient was only 0.09-0.10 and the wear life was more than 2000 sliding cycles at a sliding speed of 90 mm/min and a load of 1.0 N.

Key words: Au-TiO2 composite thin films, Sol gel process, Optical and frictional properties

中图分类号: 

TrendMD: