燕山大学学报2024，Vol.48Issue(6)：537-549,13.DOI:10.3969/j.issn.1007-791X.2024.06.008
铁路辙叉用新型高氮高锰钢的耐腐蚀性能研究
Study on corrosion resistance of a novel high nitrogen high manganese steel for railway frogs
摘要
Abstract
The corrosion resistance of a new type of high-nitrogen high-manganese steel,Mn18Cr7C0.6N0.2 steel,used in railway frogs,and traditional high-manganese steel,Mn13C1.1 steel,was investigated in a simulated marine industrial atmospheric environment using electrochemical test and salt spray corrosion experiment.The corrosion resistance and corrosion products were compared by means of metallographic microscopy,scanning electron microscopy,and X-ray diffraction analysis.Electrochemical test results show that Mn18Cr7C0.6N0.2 steel exhibited a higher corrosion potential,lower corrosion current density and reduced susceptibility to corrosion in the simulated marine industrial atmospheric environment,when compared to Mn13C1.1 steel,which can be attributed to the alloying treatment of high-manganese steel with low C content and increased Cr and N content.The salt spray corrosion test reveals that Mn18Cr7C0.6N0.2 steel displayed a lower corrosion weight gain than that of Mn13C1.1 steel after the same corrosion time,indicating superior corrosion resistance.This improvement can be attributed to the formation of a more compact rust layer and the generation of a protective α-FeOOH.关键词
辙叉/高氮高锰钢/电化学测试/盐雾腐蚀Key words
frogs/high-nitrogen high-manganese steel/electrochemical test/salt spray corrosion分类
矿业与冶金引用本文复制引用
申书超,宁榴莲,陈晨,吕博,张福成..铁路辙叉用新型高氮高锰钢的耐腐蚀性能研究[J].燕山大学学报,2024,48(6):537-549,13.基金项目
国家自然科学基金资助项目(52201143,52171049) （52201143,52171049）
河北省高等学校科学技术研究项目(BJK2023033) （BJK2023033）
河北省研究生创新资助项目(CXZZSS2021059) （CXZZSS2021059）
