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

作　　者：申书超 宁榴莲 陈晨[1,2] 吕博 张福成[1,2,4] SHEN Shuchao;NING Liulian;CHEN Chen;LU Bo;ZHANG Fucheng(State Key Laboratory of Metastable Matenials Science and Technology,Yanshan University,Qinhuangdao,Heibei 066004,China;National Engineering Research Center for Equipment and Technology of Cold Strip Rolling,Yanshan Univensity,Qinhuangdao,Hebei 066004,China;School of Environmental and Chemical Engineering,Yanshan University,Qinbuangdao,Heibei 066004,China;School of Meallugy and Energy,North China University of Science and Technology,Tangshan,Hebei 063210,China)

机构地区：[1]燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004 [2]燕山大学国家冷轧板带装备及工艺工程技术研究中心,河北秦皇岛066004 [3]燕山大学环境与化学工程学院,河北秦皇岛066004 [4]华北理工大学冶金与能源学院,河北唐山063210

出　　处：《燕山大学学报》2024年第6期537-549,共13页Journal of Yanshan University

基　　金：国家自然科学基金资助项目(52201143,52171049);河北省高等学校科学技术研究项目(BJK2023033);河北省研究生创新资助项目(CXZZSS2021059)。

摘　　要：本文以铁路辙叉用新型高氮高锰钢Mn18Cr7C0.6N0.2钢和传统高锰钢Mn13C1.1钢为研究对象,在模拟海洋工业大气环境中对其进行了电化学测试和盐雾腐蚀试验,并使用金相显微镜、扫描电子显微镜和X射线衍射分析仪对比研究了其耐腐蚀性能和腐蚀产物。电化学测试结果表明,在模拟海洋工业大气环境中,Mn18Cr7C0.6N0.2钢较Mn13C1.1钢具有更高的腐蚀电位和更小的腐蚀电流密度,腐蚀倾向更小,这归功于对高锰钢进行了低C和高Cr、N的合金化处理;盐雾腐蚀试验表明,经相同的腐蚀时间后,Mn18Cr7C0.6N0.2钢的腐蚀增重小于Mn13C1.1钢,具有更加优异的耐腐蚀性能,这主要归功于其锈层较为致密且生成了防护性较好的α-FeOOH。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 atmospherie environment using electrochemical test and salt spray corosion experiment.The corrosion resistance and corrosion products were compared by means of metallgraphic 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 atmospherie environment,when compared to Mn13C1.1 steel,which can be atributed 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 Mn18Cr7C0.6NO.2 steel displayed a lower corrosion weight gain than that of Mn13C1.1 steel after the same corrosion time,indicating superior corosion resistance.This improvement can be attributed to the formation of a more.compact rust layer and the generation of a protective α-Fe0OH.

关 键 词：辙叉 高氮高锰钢 电化学测试 盐雾腐蚀 

分 类 号：TG174.4[金属学及工艺—金属表面处理]