华中科技大学学报（自然科学版）2016，Vol.44Issue(10)：16-21,6.DOI:10.13245/j.hust.161004
弹性应力对碳钢在海水环境中腐蚀速率的影响
Effects of elastic stress on corrosion rate of carbon steel in seawater
摘要
Abstract
In order to study the corrosion cumulative damage of ship and marine structures under the combined effects of loading and corrosion conditions ,the effects of elastic stress on corrosion poten‐tial ,potentiodynamic polarization characteristics ,linear polarization resistance and electrochemical im‐pedance spectra for Q235B steel in 3 .5% NaCl solution were investigated by employing the electro‐chemical measurement techniques .Meanwhile ,the impact of elastic stress on the interfacial tension between the metal and solution was also studied by using the contact angle measurement technique . Experimental results show that elastic stress can cause negative shift of corrosion potential and accel‐erate corrosion of steel significantly .Based on the results of electrochemical measurements ,a model of elastic stress on corrosion rate was established .Both interfacial tension and surface contact angle de‐crease significantly with the increase of stress level ,and thus the interfacial tension between metal and solution can be applied to the study of mechano‐chemical effect .关键词
腐蚀/力学-化学效应/电化学测试/接触角/界面张力Key words
corrosion/mechano-chemical effect/electrochemical measurement/contact angle/interfa-cial tension分类
矿业与冶金引用本文复制引用
杨宏启,张崎,李一民,黄一..弹性应力对碳钢在海水环境中腐蚀速率的影响[J].华中科技大学学报（自然科学版）,2016,44(10):16-21,6.基金项目
国家自然科学基金资助项目（50921001，51221961，51379031）；国家重点基础研究发展计划资助项目（2011CB013704）；工信部高技术船舶资助项目． （）
