自制铁铬锰合金耐液锌腐蚀性能的研究  

Corrosion behavior of a FeCrMn alloy in galvanizing bath for rolls in galvanizing lines

作　　者：张艺[1] 刘俊友[1] 吴春京[1] 田广新[1] 李伟 刘杰 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]北科德瑞冶金工程技术有限公司,北京100083

出　　处：《材料科学与工艺》2010年第6期762-766,共5页Materials Science and Technology

基　　金："耐液态铝锌硅高温腐蚀的新合金材料"中小企业创新基金项目(07KW14003)

摘　　要：针对应用于连续热镀锌生产线上辊类部件用材设计的奥氏体合金,系统研究了自制铁铬锰合金在工业锌液中(Zn-0.2%Al)的腐蚀行为及组织变化规律.研究表明:铁铬锰合金在工业锌液中具有良好的耐锌腐蚀能力,其腐蚀速率为8.11×10-4 g/(cm2.h),而316L的腐蚀速率为1.65×10-3 g/(cm2.h);铁铬锰合金在工业锌液中首先生成Fe2Al5,其稳定性较好,可长时间抑制铁锌反应,12 d后铁锌金属间化合物才开始出现,生成的δ(FeZn7)相中,因固溶了质量分数约为5.14%的Cr,使得δ相稳定性增加,进一提高了铁铬锰合金的耐锌腐蚀能力.以锰代镍来制取低成本的铁铬锰耐锌腐蚀合金具有可行性.A austenitic alloy-FeCrMn alloy for immersed rolls in continuous hot-dip coating lines was developed,and a systematic study of corrosion behaviors of this alloy in molten zinc at 450 ℃ was carried out to better understand the reaction mechanism.The results show that the corrosion rate of the FeCrMn alloy in galvanizing bath is approximately 8.11×10^-4 g/（cm^2·h）,while that of the 316L is 1.65×10^-3 g/（cm^2·h）.It is also found that the phase of Fe2Al5can exist in the FeCrMn alloy stably for 12 days.In comparison,a Fe-Zn intermetallic compound forms in the 316L after 5 days.After 12 days,the δ phase appears in the FeCrMn alloy which contains about 5.14% Cr.The existence of Cr improves the stabilization of δ phase by slowing down the reaction of Fe and Zn.So it is feasible to substitute manganese for nickel in making the FeCrMn austenitic corrosion resistance alloy.

关 键 词：腐蚀 工业锌液 铁铬锰合金 辊类部件 

分 类 号：TG174[金属学及工艺—金属表面处理]