ZA35-xNi合金的枝晶臂间距和电化学性能  

Dendrite Arm Spacing and Electrochemical Properties on ZA35-xNi Alloy

作　　者：刘敬福[1] 冯立丽[1] 

机构地区：[1]辽宁工程技术大学材料科学与工程学院,辽宁阜新123000

出　　处：《有色金属工程》2016年第4期26-29,共4页Nonferrous Metals Engineering

基　　金：辽宁工程技术大学博士基金(0994)

摘　　要：利用金相显微镜观察合金的显微组织并测量枝晶臂间距,采用电化学工作站研究不同镍含量ZA35合金的电化学腐蚀性能。结果表明,元素镍的加入对合金组织细化和耐蚀性能具有重要影响,当加入量为0.5%时所得ZA35-0.5Ni合金组织最为细化,为团絮状组织,二次枝晶臂间距最小,仅为12.84μm,比ZA35合金减小23%。该合金在3.5%Na Cl溶液中的耐蚀性能高,腐蚀电流密度较ZA35合金减小85%。The microstructures and dendrite arm spacing of ZA35 alloy were analyzed by using metallographic microscope. The electrochemical properties of ZA35 alloys with different Ni contents were studied by using electrochemical workstation. The results show that Ni has important effects on microstructure refinement and corrosion resistance of alloy. The microstructure is best refined and the secondary dendrite arm spacing is the smallest （only 12.84um） when Ni content is 0.5%. Comparing with cast ZA35, the spacing of the two dendrite arm of ZA35-0.5Ni alloy is reduced by 23% and the corrosion current density in 3.5% NaCl solution is decreased 85%.

关 键 词：ZA35合金 镍 枝晶臂间距 电化学性能 

分 类 号：TG113.12[金属学及工艺—物理冶金] TG113.23[金属学及工艺—金属学]