HR3C耐高温腐蚀性能研究  

Study on High Temperature Corrosion Resistance of HR3C

作　　者：米梦芯 张岩[1] 陈琳[1] 王兴平 刘子涵[1] 盛耀权 李宇春[1] MI Meng- xin; ZHANG Yan; CHEN Lin; WANG Xing- ping; LIU Zi- Han SHENG Yao- quan; LI Yu- chun;(School of Chemistry ＆ Biological Engineering, Changsha University of Science ＆ Technology, Changsha 410114, China)

机构地区：[1]长沙理工大学化学与生物工程学院

出　　处：《材料保护》2018年第10期50-54,154,共6页Materials Protection

摘　　要：为了确定HR3C在生物质燃烧条件下耐高温腐蚀性能的优劣，模拟生物质电厂锅炉过热器的烟气侧环境。对生物质电厂过热器材料HR3C进行高温腐蚀研究。通过试样腐蚀增重试验和电化学试验，分析了该材料的腐蚀动力学行为，研究了其腐蚀动力学规律及特征；采用金相显微镜、扫描电镜（SEM）、能谱仪（EDS）对试验后的试样的形貌、结构、元素含量进行了分析，并与哈氏合金C22和不锈钢304进行了耐腐蚀性的对比。结果显示：HR3C表现出较好的耐高温KCl腐蚀性能，并比C22材料更加经济适用；304对KCl蒸汽和反应温度比较敏感。The high temperature corrosion of the superheater material HR3C applied for the biomass power plant was studied in the simulated flue gas side environment of the superheater. Through the corrosion weight test and electrochemical corrosion test, the corrosion dynamic behav- ior of the material was analyzed, and the corrosion kinetics rules and characteristics were studied. In addition, the morphology, structure and element compositions of samples were characterized by metallurgical microscope, scanning electron microscope （ SEM ） and energy dispersive spectroscopy （ EDS）, and the corrosion resistance of materials were compared with those of Harris alloy C22 and stainless steel 304. Results showed that HR3C presented good corrosion resistance to high temperature and potassium chloride, which was more economical than C22. Besides, 304 was more sensitive to KC1 steam and reaction temperature.

关 键 词：HR3C 生物质电厂 过热器 高温腐蚀 KCL 

分 类 号：TG172.6[金属学及工艺—金属表面处理]