Microstructure Effects on Corrosion Behavior of Mg-Zn-Zr-Nd ZM6 magnesium Alloy

摘要：

　　The effect of microconstituents on the corrosion and electrochemical behavior of Mg-Zn-Zr-Nd ZM6 magnesium alloy prepared by die-casting and ingot casting route has been investigated in 3.5Wt%NaCl solution.The experimental techniques used include long term immersion test and potentiodynamic polarization experiments.Surface examination and analytical studies were carried out using opticai(OM) and scanning electron microscopy(SEM) and X-ray diffraction(XRD).Die-cast ZM6 magnesium alloy with smaller grain size offered marginally lower corrosion rate.In die-cast and ingot,corrosion attack took place preferentially on α-Mg phase.XRD patterns of non-corroded surface revealed α-Mg and Mg12Nd phases.The corrosion products for ZM6 ingot consisted of Mg(OH)2 together with α-Mg and Mg12Nd phases.The corrosion resistance of ingot is higher than diecast sample.

关键词： Magnesium alloys ZM6 Ingot Die-cast Microstructure Corrosion

作者: CHEN Chang-jun ZHANG Min FEI Qunxing

作者单位: School of Mechanical and Electrical Engineering, Laser Processing Research Center, Soochow Universit Department of Inorganic Nonmetallic Materials, School of Materials Science and Engineering, Universi

会议类型: 国际会议

会议名称: 2012 2nd International Symposium on Chemical Engineering and Material Properties(ISCEMP2012)(2012第二届化学工程与材料特性国际研讨会)

会议地点: 太原

会议语种:英文

页码: 695-698

在线出版日期: 2012-06-23（万方平台首次上网日期，不代表论文的发表时间）