您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 15    No. 4    August 2005

[PDF Download]    [Flash Online]

    

In situ formation of titania film on NiTi alloy treated with hydrogen peroxide solution at low temperature
CHU Cheng-lin(储成林)1, ZHOU Jun(周 俊)1
CHUNG Jonathan-CY(钟志源)2, PU Yao-pu(浦跃朴)3, LIN Ping-hua(林萍华)1

1. Department of Materials Science and Engineering, Southeast University, 
Nanjing 210096, China; 
2. Department of Physics and Materials Science, City University of Hong Kong, 
Hong Kong, China; 
3. School of Public Health, Southeast University, Nanjing 210096, China

Abstract: Chemically polished NiTi shape memory alloy(SMA) substrate was treated with a boiling aqueous solution containing hydrogen peroxide to form titania film in situ at low temperature. The surface characterizations of titania film on NiTi substrate were investigated by scanning electron microscopy, X-ray diffractometry and X-ray photoelectron spectroscopy. The results show that titania film is successfully fabricated in situ on NiTi SMA by this surface oxidation method. It is mainly composed of rutile and anatase, whose surface compositions and morphologies are sensitive to H2O2 content. In situ formation mechanism of titania film on NiTi substrate was discussed based on the experimental results.

 

Key words: titania; thin films; shape memory alloy(SMA); NiTi alloy; oxidation; surface structure 

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn