| 钝化304不锈钢在弱碱性含氯介质中的点蚀机理 |
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| 引用本文： | 张普强,吴继勋.钝化304不锈钢在弱碱性含氯介质中的点蚀机理[J].北京科技大学学报,1990,12(2):142-147. |
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| 作者姓名： | 张普强 吴继勋 |
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| 作者单位： | 北京科技大学表面科学与腐蚀工程系 |
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| 摘 要： | 采用交流阻抗技术研究了钝化304不锈钢在pH8.4,H_3BO_3(0.2Mol/t-Na_2B_4O_7(0.05mol/1)及pH9.2,Na_2B4O_7(0.05moI/I)的含氯介质中的点蚀行为;提出了点蚀的反应机理及发展阶段的界面等效电路模型,并认为在点蚀的发生和发展阶段都可能有复合物(MOHCl)及其进一步的吸附产物(MOHCl-Cl_n~-)形成。
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| 关 键 词： | 点蚀 钝化 不锈钢 含氯介质 |
Pitting Mechanism of Passive 304 Stainless Steel in Weakly Basic Media Containing Chlorion |
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| Zhang Puqiang Wu fixun Zhang Wenqi Lu Xinying.Pitting Mechanism of Passive 304 Stainless Steel in Weakly Basic Media Containing Chlorion[J].Journal of University of Science and Technology Beijing,1990,12(2):142-147. |
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| Authors: | Zhang Puqiang Wu fixun Zhang Wenqi Lu Xinying |
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| Institution: | Dept. of Surface. Sci. and Corro. Eng. |
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| Abstract: | The pitting behavior of passive 304 stainless steel in pH8.4, H3BO3 (0.2mol/l)-Na2B4O7 (0.05mol/l) and pH9.2, Na2B4O7 (0.05mol/l) solutions containing chlorion has been investigated using impedance technique. The possible reaction mechanism as well as the corresponding equivalent circuit model is presented. It is proposed that an intermediate complex (MOHCl) and its further adsorbed product (MOHCl-Cln-)ads will form during pit initiation and propagation stages. |
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| Keywords: | pitting passivation stainless steel solution containing chlorion |
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