321不锈钢点蚀电位影响因素的研究

中国腐蚀与防护学报

2006, Vol. 26

Issue (1): 22-30

研究报告

本期目录 | 过刊浏览

321不锈钢点蚀电位影响因素的研究

曹占锋;乔利杰;褚武扬

北京科技大学

STUDY ON EFFECT FACTORS TO PITTING POTENTIAL OF 321 STAINLESS STEEL

Zhanfeng Cao;Ljie Qiao;Wuyang Zhu

北京科技大学

全文: PDF(220 KB)

摘要: 通过正交设计和对比实验研究了温度、pH值以及Cl-和SO2-4含量对321不锈钢点蚀电位的影响.正交设计表明，温度和Cl-(Cl-≥0.014 mol/L)含量对点蚀电位Eb的影响显著，但pH值（6～9）则没有影响.对比实验表明，当Cl-≤0014 mol/L时，Cl-对Eb没有影响，当Cl->0.014 mol/L，则Eb随Cl-浓度对数升高而线性下降.点蚀电位随温度升高而下降.如不含Cl-，则SO2-4对Eb没有影响，当Cl-=0.028 mol/L时，Eb随SO2-4浓度升高而升高，并趋于稳定值.

关键词 ：正交设计, 321不锈钢, 点蚀电位

Abstract：The effects of temperature,pH,Cl- and SO2-4 concentration on pitting potential of 321 stainless steel were investigated by using quadrature test design and contrastive test.The results of quadrature test design showed temperature and Cl- (Cl-≥0.014 mol/L) concentration remarkably influenced pitting potential Eb,but pH(6～9) value did not.The results of contrastive test indicated Cl- concentration had no effect on Eb when Cl-≤0.014 mol/L,but Eb enhanced with the increasing of Cl- concentration when Cl->0.014 mol/L.Increasing the temperature shifted the critical potential to more active values.If Cl-=0,SO2-4 concentration had no effect on Eb,but if Cl-=0.028 mol/L,Eb enhanced with the increasing of SO2-4 concentration.

Key words： Quadrature test design 321 stainless steel pitting potential

收稿日期: 2004-12-14

ZTFLH:

TG174.36

通讯作者: 曹占锋 E-mail: lqiao@ustb.edu.cn

Corresponding author: Zhanfeng Cao E-mail: lqiao@ustb.edu.cn

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曹占锋; 乔利杰; 褚武扬 . 321不锈钢点蚀电位影响因素的研究[J]. 中国腐蚀与防护学报, 2006, 26(1): 22-30 .
Zhanfeng Cao, Ljie Qiao, Wuyang Zhu. STUDY ON EFFECT FACTORS TO PITTING POTENTIAL OF 321 STAINLESS STEEL. J Chin Soc Corr Pro, 2006, 26(1): 22-30 .

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2006/V26/I1/22

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