空气对流对HFC125/N_2气氛下镁熔体表面膜的影响  

Effect of Air Convection on Surface Film of Magnesium Alloy Melt under HFC125/N_2 Atmosphere

作　　者：张心灵[1] 游国强[1,2] 查吉利[1,3] 龙思远[1,3] 

机构地区：[1]重庆大学,重庆400045 [2]国家镁合金材料工程技术研究中心,重庆400044 [3]重庆硕龙科技有限公司,重庆400030

出　　处：《稀有金属材料与工程》2011年第8期1496-1499,共4页Rare Metal Materials and Engineering

基　　金：重庆市自然科学基金项目(CSTC2008BB4175);广东省重大科技专项(2008A090300004)

摘　　要：HFC125气体可以对高温镁合金提供有效的阻燃保护。研究了空气对流对HFC125/N2混合气体与镁合金熔体反应形成的表面膜的影响。结果表明:在弱空气对流条件下所得表面膜几乎没有氧原子,而在强空气对流条件下所得表面膜含有少量氧原子;两种工作环境下保护效果没有明显差别。HFC125 gas is an effective ignition-proof protection to high temperature magnesium alloy melt.The surface films from the reaction between HFC125/N2 gas mixture and Mg alloy melt was studied under the weak or strong air convection condition.The results show that under the condition of weak air convection,almost no oxygen ion exists in the obtained surface film,while under the condition of strong air convection,the surface film contains a small amount of oxygen ion.The protection effect does not change obviously for the both working conditions.

关 键 词：保护气体 镁合金 HFC125 MGF2 

分 类 号：TG146.22[一般工业技术—材料科学与工程]