摘要
The effect of homogenization treatment on the corrosion behavior and corrosion mechanism of Mg-Y alloys in 3.5 wt% NaCl solution was investigated by electrochemical characterization, immersion testing and SEM observations. The diffusion kinetics model of Mg-Y alloy was established, and the homogenization system was determined. With increasing of homogenization temperature and time, the Mg24Y5 phase gradually decreased, which increased the self-corrosion potential and the high-frequency arc radius. The corrosion resistance of the five alloys could be given as follow: Mg-0.25Y < Mg-8Y < Mg-15Y < Mg-5Y < Mg-2.5Y. The Mg- (0.25, 2.5 and 5) Y show localized corrosion in a wide range and small depth, while Mg- (8 and 15) Y showed localized corrosion in a smaller range and larger depth.
作者
ZHANG Xin
ZHANG Kui
WU Zhiquan
张新;ZHANG Kui;WU Zhiquan(Technology Center/General Institute of Emergency Research,Xinxing Cathay International Group,Beijing 100070,China;State Key Lab for Fabrication&Processing of Non-ferrous Metals,General Research Institute for Non-ferrous Metals,Beijing 100088,China;Xinxing Cathay International Science&Technology Development Co.,Ltd,Beijing 100070,China;China Datang Coporation Renewable Energy Science and Technology Research Institute,Beijing 100040,China)
基金
Funded by the National Key Technologies R&D Program of China (No.2019YFC1511405)
the National Science and Technology Support Program of China (No.2011BAE22B06)
