| 硼酸-硼砂介质中硫离子对不锈钢钝化膜的侵蚀性 |
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| 引用本文： | 葛红花,周国定,吴文权.硼酸-硼砂介质中硫离子对不锈钢钝化膜的侵蚀性[J].腐蚀科学与防护技术,2004,16(4):211-214. |
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| 作者姓名： | 葛红花 周国定 吴文权 |
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| 作者单位： | 上海电力学院环境工程系,国家电力公司热力设备腐蚀与防护重点实验室,上海,200090 |
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| 基金项目： | 上海市高等学校科学技术发展基金 ( 0 2 0K0 1)，上海电力学院博士基金，上海市教委重点培育学科基金资助项目 |
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| 摘 要： | 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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| 关 键 词： | Mott-Schottky图 Nyquist图 不锈钢 |
| 文章编号： | 1002-6495(2004)04-0211-04 |
| 收稿时间： | 2003-03-03 |
| 修稿时间： | 2003年3月3日 |
INFLUENCE OF SULFIDE ON PASSIVE FILMS ON STAINLESS STEEL IN BORATE BUFFER SOLUTION |
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| GE Hong-hua,ZHOU Guo-ding,WU Wen-quan Environmental Engineering.INFLUENCE OF SULFIDE ON PASSIVE FILMS ON STAINLESS STEEL IN BORATE BUFFER SOLUTION[J].Corrosion Science and Protection Technology,2004,16(4):211-214. |
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| Authors: | GE Hong-hua ZHOU Guo-ding WU Wen-quan Environmental Engineering |
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| Affiliation: | GE Hong-hua,ZHOU Guo-ding,WU Wen-quan Environmental Engineering Department,Shanghai University of Electric Power,Shanghai 200090 |
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| Abstract: | The passive films formed on stainless steel in borate buffer solution contained certain among of sulfide,the influence of which on corrosion behavior of the passive film has been studied using Mott-Schottky plots,Nyquist plots and anodic polarization curves.It is shown that the impedance of the stainless steel electrode increases with immersing time,but decreases sharply due to the presence of sulfide.With the increase of sulfide,the passive current of stainless steel electrode rises,and the Mott-Schottky plots change in the region of chromium oxide.It is concluded that sulfide is detrimental to the formation of passive film on stainless steel and the passive film is less protective in the presence of sulfide. |
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| Keywords: | mott-schottky plot nyquist plot stainless steel passive film |
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