钛及钛钯合金在草酸溶液中的腐蚀行为
Corrosion Resistance of Ti and Ti-Pd Alloy in Oxalic Acid Solution
摘 要
采用电化学测试和腐蚀浸泡法, 并结合扫描电镜(SEM)和X射线衍射(XRD)等分析手段, 研究了纯钛及钛钯合金(Ti-0.2Pa)在草酸溶液中的腐蚀行为。结果表明, 钛及钛钯合金在草酸溶液中的腐蚀产物为TiH1.5。在试验条件下, 钛钯合金的耐蚀性能虽略优于钛, 但若延长试验时间, 提高草酸溶液的温度或浓度, 均会使钛钯合金腐蚀加重。试验结果显示: 钛及钛钯合金设备均不适合在草酸介质中使用。
钛钯合金
草酸
耐腐蚀
Ti
Ti-Pd alloy
oxalic acid
corrosion resistance
Abstract
The corrosion behaviors of Ti and Ti-0.2Pd alloy in oxalic acid solution were studied by means of electrochemical methods and immersion corrosion method, combined with SEM and XRD. The results showed that the corrosion product of Ti and Ti-Pd alloy in oxalic acid solution was TiH1.5. Under the experimental condition, the corrosion resistance of Ti-Pd alloy was a little better than that of Ti, but if the test time was longer, the temperature or concentration of oxalic acid solution was higher, the corrosion of Ti-Pd alloy would be serious. Equipment made by Ti and Ti-Pd alloy is not suitable to be used in oxalic acid medium.
中图分类号 TG172.6
所属栏目 试验研究
基金项目
收稿日期 2010/8/23
修改稿日期 2010/9/6
网络出版日期
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备注丁毅, 副教授,
引用该论文: ZHU Jing,DING Yi,WANG Xiao-xia,YANG Meng,MA Li-qun. Corrosion Resistance of Ti and Ti-Pd Alloy in Oxalic Acid Solution[J]. Corrosion & Protection, 2011, 32(6): 445
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参考文献
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【5】Brossia C S, Cragnolino G A. Effect of palladium on the corrosion behavior of titanium[J]. Corrosion Science, 2004, 46(7):1693-1711.
【6】郭敏, 彭乔, 隋永强, 等. 钛在海水中的阴极极化行为[J]. 材料保护, 2002, 35(3): 23-24.
【7】Kenichi Yokoyama, Toshio Ogawa, Kenzo Asaoka, et al. Evaluation of hydrogen absorption properties of Ti-0.2% Pd alloy in fluoride solutions[J]. Alloy and Compounds, 2005, 400:227-233.
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