材料科学
微观结构
腐蚀
合金
金属间化合物
冶金
透射电子显微镜
扫描电子显微镜
光学显微镜
复合材料
纳米技术
作者
Minmin Li,Zhe Qin,Yan Yang,Xiaoming Xiong,Gang Zhou,Xiaofei Cui,Bin Jiang,Xiaodong Peng,Fusheng Pan
标识
DOI:10.1007/s40195-022-01377-8
摘要
The extruded Mg-6Li-4Zn-xMn (x = 0, 0.4, 0.8, 1.2 wt%) alloys were prepared, and the microstructure of the test alloys was investigated by optical microscopy, scanning electron microscopy and transmission electron microscopy. The corrosion properties were determined by electrochemical measurements and immersion measurements in 3.5% NaCl solution. The results indicate that the extruded Mg-6Li-4Zn-xMn alloys are mainly composed of α-Mg phase, β-Li phase, Mn precipitates and some intermetallic compounds (MgLi2Zn). With the addition of Mn, stable corrosion products were formed on the surface of the test alloy, which can effectively inhibit further corrosion progress and improve the corrosion resistance. Mg-6Li-4Zn-1.2Mn alloy exhibits the best corrosion resistance, attributed to grain refinement, the improvement of the stability of corrosion product film and uniform distribution of fine second phases.
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