摘要
采用高温熔融工艺制备了添加不同Mg含量的铝合金材料.借助XRD,SEM及EDX等测试手段分析了不同Mg含量添加对可溶解铝合金材料显微结构及相组成的影响规律;分析了不同Mg含量添加及水温对合金可溶解性能的影响;探讨了合金与水反应的溶解机理.研究结果表明:不同含量的Mg元素对合金的显微结构和物相有着显著影响;合金在不同水温下的溶解速度随着Mg含量的增加,呈现先增大后减小的峰值变化趋势;并且在Mg含量为3wt%时,溶解速度达到最大值.合金拥有较高的溶解速度的原因是Mg2Sn相和周边铝基体相之间的电化学腐蚀反应.
Aluminum alloy was prepared by using melting technique with different Mg additions.The different Mg additions on the microstructures and phase of dissolvable aluminum alloy were investigated by using X-ray diffraction and scanning electron microscope with energy dispersed X-ray.The effect of different Mg additions and water temperatures on the dissolving properties of dissolvable aluminum alloy was discussed.A mechanism of Al alloy reacts with water was proposed.Results showed that different Mg contents had obviously affected the microstructures and phase of alloy.The dissolving speed of alloy with water at different temperatures is firstly increased and then decreased with the increase of Mg contents,and when the Mg content is 3wt%,the dissolving speed reached the maximum value.The alloys have the highest dissolving rate due to the galvanic corrosion between second phases Mg2 Sn and the surrounding aluminum matrix.
出处
《陕西科技大学学报（自然科学版）》
2016年第1期46-51,71,共7页
Journal of Shaanxi University of Science & Technology
基金
国家自然科学基金项目(51272145
51171096)
陕西科技大学研究生创新基金项目
关键词
可溶解铝合金
Mg含量
溶解性能
反应机理
aluminum alloy
Mg contents
dissolving properties
reaction mechanism
