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金属学报  2004, Vol. 40 Issue (2): 207-210     
  论文 本期目录 | 过刊浏览 |
块状非晶合金Cu-Zr-Ti-Sn在3.5%NaCl溶液中的腐蚀行为
陈 鹏;秦凤香;张海峰;刘常升;胡壮麒
中国科学院金属研究所金属腐蚀与防护国家重点实验室; 沈阳 110016
Corrosion Behaviors of Bulk Amorphous Alloy Cu-Zr-Ti-Sn and Its Crystallized Form in 3.5%NaCl Solution
CHEN Peng; QIN Fengxiang; ZHANG Haifeng; LIU Changsheng; HU Zhuangqi
Shenyang National Laboratory for Materials Science; Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 11001
引用本文:

陈鹏; 秦凤香; 张海峰; 刘常升; 胡壮麒 . 块状非晶合金Cu-Zr-Ti-Sn在3.5%NaCl溶液中的腐蚀行为[J]. 金属学报, 2004, 40(2): 207-210 .
, , , , . Corrosion Behaviors of Bulk Amorphous Alloy Cu-Zr-Ti-Sn and Its Crystallized Form in 3.5%NaCl Solution[J]. Acta Metall Sin, 2004, 40(2): 207-210 .

全文: PDF(2599 KB)  
摘要: 利用电化学极化曲线方法和电化学阻抗谱(EIS)技术研究了Cu60Zr30Ti10和(Cu60Zr30Ti10)99Sn1块状非晶合金及其晶化后在3.5%NaCl溶液中的腐蚀行为. 极化曲线测试结果表明, (Cu60Zr30Ti10)99Sn1非晶合金在3.5%NaCl溶液中的阳极极化曲线有一定的钝化倾向, 且其阳极电流密度较Cu60Zr30Ti10非晶合金的阳极电流密度有所降低; 同时EIS结果显示, 其电化学反应电阻Rt较Cu60Zr30Ti10的Rt值有所增大, 说明添加1%Sn使非晶合金Cu60Zr30Ti10的耐蚀性能有所改善. 相应成分晶化后的合金与非晶合金的极化曲线相比较, 阳极极化表现出较大的钝化倾向, 且阳极电流密度略有降低. 晶化后合金的EIS测试显示有两个时间常数, 即由高频容抗弧和低频容抗弧构成. 晶化后合金与其非晶合金相比较, 电化学反应电阻Rt明显增大, 表明晶化后合金的耐蚀性能有所提高. 图5表2参13 关键词:;腐蚀行为
关键词 晶化 电化学阻抗    
Abstract:Corrosion behaviors of bulk amorphous alloy Cu60Zr30Ti10 and (Cu60Zr30Ti10)99Sn1 and their crystallized forms in 3.5%NaCl solution were studied by potentiodynamic polarization experiments and electrochemical impedance spectroscopy (EIS). The results of potentiodynamic polarization experiment show that the anodic reaction of the amorphous (Cu60Zr30Ti10)99Sn1 has a tendency to passivation, and has lower anodic current density. Moreover, EIS experimental result shows that the amorphous (Cu60Zr30Ti10)99Sn1 alloy has higher charge transfer reaction resistance (Rt) than that of the amorphous Cu60Zr30Ti10. Compared with the amorphous alloys, the crystallized alloys have larger tendency to passivation. EIS results of crystallized alloys show two impedance elements, i.e., high frequency and low frequency capacitive loops. The charge transfer reaction resistances of crystallized alloys are larger than those of amorphous alloys.
Key wordscrystallization    electrochemical impedance spectroscopy
收稿日期: 2003-03-18     
ZTFLH:  TG139.8  
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