321不锈钢在酸性氯离子溶液中SCC缓蚀剂研究

中国腐蚀与防护学报

1992, Vol. 12

Issue (2): 109-115

研究报告

本期目录 | 过刊浏览

321不锈钢在酸性氯离子溶液中SCC缓蚀剂研究

曹楚南;杨乾刚;吕明;林海潮

中国科学院腐蚀科学开放研究实验室;中国科学院腐蚀科学开放研究实验室;中国科学院腐蚀科学开放研究实验室;中国科学院腐蚀科学开放研究实验室

INHIBITORS FOR SCC OF AISI 321 IN ACIDIC CHLORIDE SOLUTION

Cao Chu′nan ; Yang Qiangang ; Lu Min and Lin Haichao (Corrosion Sciience Laboratory; Institute of Corrosion and Protection of Metals; The Clanese Academg of Sciences

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摘要: 采用慢拉伸速率试验方法(SSRT)研究了硫脲及其衍生物与巯基苯并噻唑、伯胺类化合物、季胺盐和碘化物对于321不锈钢55℃的0.5mol/L HCl+0/5mol/L NaCl溶液中SCC的影响。在空白底液中试样发生穿晶SCC。强烈抑制不锈钢阳极溶解过程的缓蚀剂能有效地抑制这一体系的SCC。

Abstract：The effects of various inhibitors on SCC of AISI 321 stainless steel in 0. 5 mol/L HCl+0.5mol/L NaCl solution at 55℃ was investigated by Slow Strain Rate Technique. Typical transgranular SCC which was promoted by anodic polarization was observed in the blank solution. The surface of the steel was in active corrosion state. Three groups of inhibitors were investigated:S, N-containing compounds, primary amines and tetra-amine salts. For the purpose of examining the role of iodide ion, the effect of KI was also investigated. It was found that iodide salts and 2-mercaptobenzothiazole could effectively prevent the test system from SCC. A technique was developed to estimate the effects of inhibitors on anodic and cathodic processes of corrosion in acid solutions quantitatively from electrochimical measurements. By this technique, it was found that those inhibitors which reduced the rate of anodic dissolution of the steel for more than two orders of magnitude could effectively prevent the steel from SCC in the test condition.

收稿日期: 1992-04-25

基金资助:国家自然科学基金

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引用本文:

曹楚南;杨乾刚;吕明;林海潮. 321不锈钢在酸性氯离子溶液中SCC缓蚀剂研究[J]. 中国腐蚀与防护学报, 1992, 12(2): 109-115.
. INHIBITORS FOR SCC OF AISI 321 IN ACIDIC CHLORIDE SOLUTION. J Chin Soc Corr Pro, 1992, 12(2): 109-115.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1992/V12/I2/109

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