NF616和12CrMoV在模拟垃圾气化环境中的高温腐蚀  

HIGH TEMPERATURE CORROSION OF NF616 AND 12CrMoV IN SIMULATED WASTE-GASIFICATION ENVIROMENTS

作　　者：潘太军[1] 陈德贵[1] 张轲[2] 胡静[1] 

机构地区：[1]常州大学材料科学与工程学院常州市高性能金属材料重点实验室,常州213164 [2]沈阳师范大学化学工程学院,沈阳110034

出　　处：《中国腐蚀与防护学报》2011年第6期457-461,共5页Journal of Chinese Society For Corrosion and Protection

基　　金：国家自然科学基金项目(51101023);常州市工业科技项目(CN20100009)资助

摘　　要：研究比较了600℃时NF616和12CrMoV两种工业钢分别在3种还原性气氛(H_2-CO_2、H_2-HCl-CO_2和H_2-HCl-H_2S-CO_2)中的腐蚀行为。与在H_2-CO_2和H_2-HCl-CO_2气氛中的腐蚀相比,NF616和12CrMoV在H_2-HCl-H_2S-CO_2气氛中发生了加速腐蚀,尤其是12CrMoV表面氧化铬膜发生退化,金属的加速腐蚀主要是由腐蚀过程中形成金属硫化物和氯化物所致,文中依据热力学相图讨论了材料发生加速腐蚀的机制。The corrosion behavior of two commercial steels NF616 and 12CrMoV was comparatively investigated at 600℃ in H2-CO2, H2-HCl-CO2 and H2-HCl-H2S-CO2 reducing atmospheres. In comparison with corrosion behavior of the same-type steels in H2-CO2 and H2-HCl-CO2 reducing atmosphere, NF616 and 12Cr- MoV suffered from accelerated corrosion in the H2-HCl-H2S-CO2 atmosphere, particularly the degradation of chromia formed on 12CrMoV. The kind of accelerated corrosion was mainly attributed to formation of metal chlorides and sulfides during corrosion procedure. The mechanism on accelerated corrosion is illuminated on the basis of thermodynamic diagrams.

关 键 词：硫 氯 高温腐蚀 内氧化 

分 类 号：TG172[金属学及工艺—金属表面处理]