Ni-Mn合金的去合金化  

Study of Ni-Mn Alloy Dealloying

作　　者：陆兴[1] 孙钊[1] 李志强[1] 王琪[1] 

机构地区：[1]大连交通大学材料科学与工程学院,辽宁大连116028

出　　处：《大连交通大学学报》2012年第6期81-84,88,共5页Journal of Dalian Jiaotong University

基　　金：教育部博士点基金资助项目(20080150002);辽宁省政府人才基金资助项目(RC-04-15)

摘　　要：在氩气保护下,应用真空熔炼炉分别制备了Ni30Mn70与Ni55Mn45合金.测定了这两种合金在(NH4)2SO4溶液中的极化曲线,然后对其进行去合金化实验.结果显示,Ni30Mn70合金在1 M(NH4)2SO4溶液中去合金化后,试样表面呈现"泥裂"结构.Ni55Mn45在1 M(NH4)2SO4溶液中不同电位下去合金化后得到了小孔状结构.随腐蚀电位增加,小孔状结构有粗化趋势.By vacuum melting Ni and Mn under Ar atmosphere Ni30Mn70 and Ni55Mn45 alloys were prepared, the polarized behaviors of the alloys in （NH4 ）2SO4 aqueous solution were studied, and the dealloying experi- ments were performed. The results show that the dealloying of Ni30Mn70 alloy in 1 M （NH4 ）2SO4 obtains a ＂mud crack＂ structure, and the Ni55Mn45 alloy dealloyed in the same solution at different potentials shows a ＂small pore＂ structure which becomes coarsening with increasing corrosion potential.

关 键 词：镍锰合金 去合金化 极化曲线 

分 类 号：TF801[冶金工程—有色金属冶金]