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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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硼酸-硼砂介质中硫离子对不锈钢钝化膜的侵蚀性
, PP. 211-214
Keywords: Mott-Schottky图,Nyquist图,不锈钢
Abstract:
Mott-Schottky图、Nyquist图及阳极极化曲线测定研究了硼酸-硼砂缓冲溶液中硫离子对不锈钢钝化膜耐蚀性能的影响，结果表明随浸泡时间增加不锈钢电极阻抗值增大，但硫离子加入后阻抗值快速降低；阳极极化曲线测定显示硫离子使不锈钢钝态电流增大；硫离子浓度的增加使不锈钢电极的Mott-Schottky图中体现p-型半导体(铬氧化物)性质的直线段发生较大变化，说明硫离子影响了钝化膜中铬氧化物的性质，使其耐蚀性能降低.钝化膜
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