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鈍化304不銹鋼在弱堿性含氯介質中的點蝕機理

張普強,  吳繼勛,  張文奇,  路新瀛

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文章導航 > 工程科學學報  > 1990 >  12(2): 142-147
張普強, 吳繼勛, 張文奇, 路新瀛. 鈍化304不銹鋼在弱堿性含氯介質中的點蝕機理[J]. 工程科學學報, 1990, 12(2): 142-147. doi: 10.13374/j.issn1001-053x.1990.02.027
引用本文: 張普強, 吳繼勛, 張文奇, 路新瀛. 鈍化304不銹鋼在弱堿性含氯介質中的點蝕機理[J]. 工程科學學報, 1990, 12(2): 142-147. doi: 10.13374/j.issn1001-053x.1990.02.027
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Zhang Puqiang, Wu Jixun, Zhang Wenqi, Lu Xinying. Pitting Mechanism of Passive 304 Stainless Steel in Weakly Basic Media Containing Chlorion[J]. Chinese Journal of Engineering, 1990, 12(2): 142-147. doi: 10.13374/j.issn1001-053x.1990.02.027
Citation: Zhang Puqiang, Wu Jixun, Zhang Wenqi, Lu Xinying. Pitting Mechanism of Passive 304 Stainless Steel in Weakly Basic Media Containing Chlorion[J]. Chinese Journal of Engineering, 1990, 12(2): 142-147. doi: 10.13374/j.issn1001-053x.1990.02.027
shu

鈍化304不銹鋼在弱堿性含氯介質中的點蝕機理

doi: 10.13374/j.issn1001-053x.1990.02.027

  • 表面科學與腐蝕工程系

Pitting Mechanism of Passive 304 Stainless Steel in Weakly Basic Media Containing Chlorion

  • Dept. of Surface. Sci. and Corro. Eng.

    摘要
  • 摘要: 采用交流阻抗技術研究了鈍化304不銹鋼在pH8.4,H3BO3(0.2Mol/t-Na2B4O7(0.05mol/1)及pH9.2,Na2B4O7(0.05mol/l)的含氯介質中的點蝕行為;提出了點蝕的反應機理及發展階段的界面等效電路模型,并認為在點蝕的發生和發展階段都可能有復合物(MOHCl)及其進一步的吸附產物(MOHCl-Cln-)ad形成。

     

    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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  • 收稿日期:  1989-04-12
  • 網絡出版日期:  2021-11-15
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