物理化学学报 >> 1990, Vol. 6 >> Issue (06): 681 -685 .doi: 10.3866/PKU.WHXB19900609

研究论文 上一篇    下一篇

钛在草酸溶液中腐蚀行为的XPS研究

张瑞峰; 于亚莉; 陈玉璞; 糜天英   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1989-08-02 修回日期:1990-05-03 发布日期:1990-12-15
  • 通讯作者: 张瑞峰

XPS STUDY OF CORROSION BEHAVIOUR OF TITANIUM IN H2C2O4 SOLUTION

Zhang Rui-Feng; Yu Ya-Li; Chen Yu-Pu; Mi Tian-Ying   

  1. Changchun Institute of Applied Chemistry; Academia Sinica
  • Received:1989-08-02 Revised:1990-05-03 Published:1990-12-15
  • Contact: Zhang Rui-Feng

摘要: 本文首次用X-光电子能谱(XPS)技术研究了H_2C_2O_4溶液中钛基的腐蚀行为, 对Ti基片的表面和界面进行了XPS表征. 实验结果表明:Ti基在80 ℃, 10%的草酸溶液中腐蚀两小时, 样品的表面只有Ti~0和TiO存在; 经过四小时腐蚀的样品表面主要是TiO_2和少部分Ti~(2+). 这与X-衍射分析认为有TiH_(1.042)的结构看法相符。
同时, Ti0_2与表面涂层RuO_2都属金红石型结构, 因而完全有可能形成牢固的金属阳极材料。

Abstract: The corrosion behaviour of titanium substance and the XPS characterization of Ti surface in the H_2C_2O_4 solution have been first studied by X-ray photoelectron spec-troscopy. The experimental results show that there are only Ti~0 and Ti~(2+) on sample surface in 10% H_2C_2O_4 solution for two hours corrosion at 80 ℃, but if corrosion is extended to 4 hours, the surface composition is mainly TiO_2 with a small amount of Ti~(2+).
This result corresponds to the structure of TiH_(1.942) composion in sample surface found by XRD analysis. Since both TiO_2 and the surface coating RuO_2 are of Gald-Redstone structure, therefore electrode materials of Ti-Ru are stable in chemical industry.