Abstract
以工厂换热器为研究背景,采用极化技术和自放电法,研究了不同温度下Zn-Al-Cd合金牺牲阳极和纯Zn阳极在地下井水和模拟海水中对20#钢的牺牲阳极电化学性能。开路电位、工作电位及极化曲线的测试结果表明:在30~80℃范围内,Zn-Al-Cd合金、纯Zn和20#钢在两种介质中均未出现电位极性逆转现象,牺牲阳极具有良好的电化学性能;Zn-Al-Cd合金在地下井水中生成的保护膜比模拟海水中的稳定;牺牲阳极合金成分的优化,可以有效防止电位逆转行为。
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