Ce元素的添加对Mg-1.2Ca合金氧化行为和表面张力的影响（英文）  

Oxidation Behavior and Surface Tension of Mg-1.2Ca Alloy with Ce Addition

作　　者：秦林[1] 丁俭[1] 赵维民[1] 方正[1] 

机构地区：[1]河北工业大学,天津300132

出　　处：《稀有金属材料与工程》2016年第1期23-27,共5页Rare Metal Materials and Engineering

基　　金：Natural Science Foundation of Heibei Province(E2010000121);Science and Technology Research of Hebei Province for Youth Found(2011182)

摘　　要：为了发展高性能阻燃镁合金,对工业纯镁在添加元素Ca和Ce的氧化性能进行了研究。结果表明,随着Ce含量从0%到1.5%(质量分数)的增加,Mg-1.2Ca合金的燃点不断提高,熔体表面张力不断下降。Mg-1.2Ca-1.2Ce燃点可以达到780℃,而且可在大气中不添加任何保护的情况下进行熔炼。随着Ce含量的增加,Mg-1.2Ca熔体氧化膜变得光滑而致密,可以很好地起到阻止氧化、燃烧的效果。通过检测和分析,Mg-1.2Ca-1.2Ce的氧化膜可以分成3层:外层是疏松的Mg O,中间层是MgO-CaO复合氧化膜,内层是MgO-Ce_2O_3复合氧化膜。The effects of alloying element Ce on the oxidation behavior and the surface tension of Mg-1.2Ca alloy were investigated in order to further develop the burn resistant magnesium alloys. Results show that with the increase of Ce content from 0 wt% to 1.5 wt%, the ignition point of Mg-1.2Ca alloy increases rapidly while the surface tension declines. The ignition point of Mg-1.2Ca-1.2Ce alloy can reach 780 °C. It can be melted in atmosphere without any protection method. The oxidation film of Mg-1.2Ca melt becomes smooth and dense with the increase of Ce addition, which can prevent magnesium alloys from further oxidation and burning. According to the test and analysis, the oxide film of Mg-1.2Ca-1.2Ce alloy consists of three layers, that is, loose Mg O in the outer layer, Mg O-CaO composite oxide film in the middle layer and Mg O-Ce2O3 composite oxide film in the inner layer.

关 键 词：镁合金 氧化 表面张力 钙 铈 

分 类 号：TG146.22[一般工业技术—材料科学与工程]