Improved corrosion resistance of Mg-9Gd-4Y-1Nd-0.6Zr alloy by Ce addition
To obtain better corrosion resistance for Mg-9Gd-4Y-1Nd-0.6Zr alloy, the influence of Ce on the Mg alloy microstructure and corrosion resistance was studied by experimental methods such as optical microscopy (OM),scanning electron microscopy (SEM), X-ray diffractometer (XRD), corrosion weight loss, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization etc. The Mg alloy grain size decreased with Ce addition, the block β phase turned into continuous and uniformly net, Mg12Ce phase occurred. For the Mg alloy with Ce, corrosion potential moved positively about 141 Mv, corrosion current density decreased about 45％, compared with Mg-9Gd-4Y-1Nd-0.6Zr alloy. The results suggested that corrosion resistance of the Mg alloy improved by Ce addition.
Mg-Gd-Y-Nd-Zr alloy microstructure corrosion electrochemistry
YI Jian long ZHANG Xin ming DENG Yun lai LIU Jie TANG Chang ping
School of Materials Science and Engineering, Central South University, Changsha410083, China
国内会议
长沙
英文
1-1
2010-06-19（万方平台首次上网日期，不代表论文的发表时间）