16MnR钢硫化氢腐蚀与氢渗透规律的研究  

The Investigation of H_2S Corrosion of 16MnR Steel and the Rule of Hydrogen Permeation

作　　者：余刚[1] 赵亮[1] 张学元[2] 韩恩厚[2] 刘小辉[3] 

机构地区：[1]湖南大学化学化工学院,湖南长沙410082 [2]中国科学院金属研究所,辽宁沈阳110016 [3]中国石化集团茂名石化公司,广东茂名525024

出　　处：《湖南大学学报（自然科学版）》2004年第3期5-9,共5页Journal of Hunan University:Natural Sciences

摘　　要：利用Devanathan Stachurski电化学法和失重法,在不同浓度的硫化氢溶液中研究16MnR钢的腐蚀速率和稳态氢渗透电流密度随硫化氢质量分数变化的规律.实验结果表明,其变化规律可用3个不同的线性方程拟合,通过数学处理,求得16MnR钢的腐蚀速率和渗氢电流密度之间的定量方程.H2S的质量分数超过160×10-6以后,腐蚀产物Fe2+与H2S反应形成FeS(1-x)沉积物附着在钢的表面上,使腐蚀速率减小.H2S腐蚀的渗氢效率约在10-4的数量级范围.The rules of corrosion rate and steady current density of hydrogen permeation with various mass fractions of H_2S solution were investigated with Devanathan and Stachurski electrochemical methods and weight loss method. The experimental results showed that the rules could be expressed with three different linear modeling equations. The quantitative equations of the corrosion rate with the steady current density of hydrogen permeation were established by means of mathematical derivation. Beyond 160×10^(-6) of H_2S mass fraction, the corrosion product Fe^(2+) reacted with H_2S to form FeS_((1-x)) sediment, which attached to the surface of the steel so as to reduce the corrosion rate. The permeation efficiency caused by H_2S corrosion was about the range of 10^(-4).

关 键 词：16MNR钢 湿硫化氢腐蚀 氢渗透 监测 

分 类 号：TG172[金属学及工艺—金属表面处理]