Reseach on Corrosion Resistance of Solution-treated AZ63D Magnesium Alloy

2018 5th International Conference on Advanced Composite Materials and Manufacturing Engineering

Yin, Yanxiang^1 ; Yang, Guanglei^1 ; Ma, Bojiang^1

Qingdao University of Science and Technology, Qingdao, China^1

关键词: Cast microstructure;    Corrosion characteristics;    Corrosion current;    Corrosion potentials;    Corrosion weight loss;    Electrochemical measurements;    Immersion testing;    NaCl solution;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/394/3/032100/pdf
DOI  :  10.1088/1757-899X/394/3/032100

来源: IOP

【 摘 要 】

Theas-cast AZ63D magnesium alloy and its solution-treated microstructure were examined by optical microscopy (OM) and X-ray Diffraction (XRD). The results show that the solution-treated microstructure is more even and the aggregation of β phase is decreased. The immersion testing of AZ63D magnesium alloys exposed to 3.5wt. % NaCl solution and electrochemical measurement were carried out to seek their corrosion characteristics. The results show that the corrosion weight loss of the solution-treated microstructure of AZ63D magnesium alloy is reduced by about 13.01% compared with the theas-cast microstructure. The corrosion resistance of the solution-treated microstructure is obviously better than that of the theas-cast microstructure. The free corrosion potential and the free corrosion current of the solution-treated microstructure is respectively about 2.70% higher and 6.83% less than that of the theas-cast microstructure.