测试科学与仪器2017，Vol.8Issue(2)：110-118,9.DOI:10.3969/j.issn.1674-8042.2017.02.002
电化学阻抗谱研究Zn对用于阴极保护的Al-Zn合金在3% NaCl溶液中溶解行为的影响
EIS studies the effect of Zinc to Al-Zn alloy used for cathodic protection in 3% NaCl solution
摘要
Abstract
Electrochemical impendence spectroscopy (EIS) is applied to investigate the dissolution behavior of Al-Zn alloys in 3% NaCl solution at different polarization potentials.A new reaction model is proposed, and the activation mechanism of zinc in Al-Zn alloys is achieved.There are three intermediates in the dissolution process: Zn+ad, Zn2+ad and Al+ad, of which only Zn+ad can activate Al-Zn alloys.Most Zn+ad is produced by β-phase, and the alloys with 2.3%-3.8% (wt) Zn dissolve rapidly.The Al-Zn alloys of heart-shaped EIS are active in 3% NaCl solution, thus EIS characteristic can be used to distinguish the activation of Al-Zn alloys.关键词
Al-Zn合金牺牲阳极/反应模型/电化学阻抗谱(EIS)/活化机理/富锌相(β相)Key words
Al-Zn alloy sacrificial anode/reaction model/electrochemical impendence spectroscopy (EIS)/activation mechanism/zinc enrichment phase (β-phase)分类
矿业与冶金引用本文复制引用
郝小军,雷英春,侯华,赵宇宏,王一都..电化学阻抗谱研究Zn对用于阴极保护的Al-Zn合金在3% NaCl溶液中溶解行为的影响[J].测试科学与仪器,2017,8(2):110-118,9.基金项目
National Natural Science Foundation of China (Nos.51204147, 51274175, 51574206, 51574207) （Nos.51204147, 51274175, 51574206, 51574207）
Program for International S&T Cooperation Projects of China (No.2014DFA50320) （No.2014DFA50320）
Program for International S&T Cooperation Projects of Shanxi Province (No.201381017) （No.201381017）
Technological Projects of Shanxi Province (No.20150313002-3) （No.20150313002-3）
