铸造技术2018，Vol.39Issue(5)：988-991,4.DOI:10.16410/j.issn1000-8365.2018.05.011
Ca含量对Mg-Al-Zn合金组织及腐蚀性能的影响
Effect of Ca Content on Microstructure and Corrosion Resistance of Mg-Al-Zn Alloy
摘要
Abstract
Magnesium alloys Mg-Al-Zn alloyed with different Ca content of 0, 0.3％, 0.6％, 0.9％, 1.2％ and 1.5％ were prepared by gravity casting. The microstructures of alloys were observed by optical microscope (OM) and scanning electron microscopy (SEM), and the corrosion resistances of alloys were investigated by electrochemical analysis and static weight losing method. The results show that the main corrosion mechanism of alloys is galvanic corrosion between α-Mg and second phase. The corrosion resistance of alloys increases gradually with increasing Ca content up to 0.9％ and then decreases sharply. The phenomenon is related to the morphology change of second phase in the alloys with different Ca contents.关键词
镁合金/钙/腐蚀/微观组织Key words
magnesium alloy/calcium/corrosion/microstructure分类
矿业与冶金引用本文复制引用
李会新,姬莉,高黎黎,李媛媛,张稼轩,卢东华,岳学庆..Ca含量对Mg-Al-Zn合金组织及腐蚀性能的影响[J].铸造技术,2018,39(5):988-991,4.基金项目
河北省高等学校科技研究资助项目(Z2017159) （Z2017159）
