铬锰钢在3.5%NaCl溶液中的耐腐蚀性能研究  

Stduy on Corrosion Resistance Properties of Cr-Mn Steel in 3.5% NaCl Solution

作　　者：李涛 张艳[2] 陈德旭 吕红生 龚瑞雪 杨诗雨 LI Tao;ZHANG Yan;CHEN De-xu;Lü Hong-sheng;GONG Rui-xue;YANG Shi-yu(Suzhou Institute of Technology,Jiangsu University of Science and Technology,Zhangjiagang 215600,Jiangsu,China;Metallurgy and Materials Engineering,Jiangsu University of Science and Technology,Zhangjiagang 215600,Jiangsu,China)

机构地区：[1]江苏科技大学苏州理工学院,江苏张家港215600 [2]江苏科技大学冶金与材料工程学院,江苏张家港215600

出　　处：《铸造》2021年第10期1188-1191,共4页Foundry

摘　　要：采用全腐蚀浸泡试验、动电位电化学极化曲线测试及电化学阻抗谱测试研究了Ni含量变化对铬锰钢在3.5%NaCl溶液中腐蚀行为的影响,并利用SEM、EDS分析了材料表面腐蚀形貌及腐蚀机理。结果表明:当Ni含量从0.4%增加至1.0%时,自腐蚀电流降低了2个数量级;当Ni含量达到3.0%时,表面蚀坑数量及面积大大减少,只在部分有夹杂的地方出现。The effect of Ni content on the corrosion behavior of Cr-Mn steel in 3.5%NaCl solution was studied by means of total immersion corrosion test,potentiodynamic polarization curves and electrochemical impedance spectrum measurement.The results show that when the Ni content in the Cr-Mn steel increases from 0.4%to 1.0%,the self corrosion current of the steel decreases by two orders of magnitude.When the Ni content reaches 3.0%,the number and area of corrosion pits on the sample surface decrease greatly,which only appear in some places where there are inclusions.

关 键 词：铬锰钢 3.5%NaCl溶液 Ni含量 腐蚀行为 

分 类 号：TG113.23[金属学及工艺—物理冶金]