摘要
采用熔融浇注法自行制备了Mg-1.5Zn-xMn(x=0.5、1.0、2.0)合金,利用光学显微镜、浸泡腐蚀试验及电化学测试等方法,研究了其微观组织及在Hank's模拟体液中的腐蚀行为。结果表明:Mg-1.5Zn-xMn合金的铸态显微组织是由Mg-Zn相、α-Mn相和粒状α-Mg析出相组成;随着锰含量的增大,α-Mn相逐渐增多,合金的腐蚀面积及速率逐渐增大;随着锰含量的减少,合金容抗弧半径越大,自腐蚀电位越高,腐蚀电流密度越小。说明合金中锰含量越少,其耐腐蚀性能越好。
Mg-1. 5Zn-xMn（ x = 0. 5,1. 0,2. 0） alloy was prepared by melt casting method and the corrosion behavior of the alloy in Hank＇s simulated body fluid was analyzed by immersion corrosion test and electrochemical test. The results show that the as-cast microstructure of Mg-1. 5Zn-xMn alloy is composed of Mg-Zn phase,alpha-Mn and granular precipitated alpha-Mg phase. With the increase of Mn content,alpha-Mn phase increases gradually,the corrosion area and rate of the alloy increase. With the decrease of Mn content,the condensance arc radius of the alloy becomes larger,corrosion potential becomes higher and corrosion current density becomes smaller. It indicates that the less Mn of the alloy contains,the better the corrosion resistance becomes.
作者
冯宇飞
宋义全
安玥
Feng Yufei Song Yiquan An Yue(School of Material and Metallurgy, Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010, China)
出处
《金属热处理》
CAS
CSCD
北大核心
2016年第10期29-33,共5页
Heat Treatment of Metals
