NiCoCrAlY真空熔炼过程中Y损失行为的研究  

Research on the Yttrium Loss Behavior during the Vaccum Melting of NiCoCrAlY

作　　者：罗虞霞[1,2] 马尧[1,2] 侯玉柏[1,2] 

机构地区：[1]北京矿冶研究总院,北京100160 [2]北京市工业部件表面强化与修复工程技术研究中心,北京102206

出　　处：《热喷涂技术》2014年第2期37-40,共4页Thermal Spray Technology

基　　金：国家自然科学基金青年基金(51201012);国家高技术研究发展计划"863计划"课题(2012AA03A512)

摘　　要：采用真空感应熔炼的方法制备了NiCoCrAlY合金,对合金熔炼过程中Y损失率与温度的关系及其损失过程进行了研究。结果表明,熔炼过程中元素Y主要通过向周围环境挥发、与熔渣中有害元素反应和与坩埚反应三种方式产生损失。Y的损失随着温度的升高而逐渐增加,当温度达到1853K时,由于熔体与坩埚发生剧烈反应,导致Y的损失显著加剧。NiCoCrAlY alloy was prepared by vacuum induction melting and the relationship between the loss of Y and melting temperature and its loss process were studied. The result shows that on the melting process the loss of elements Y mainly results from volatilization to the surrounding environment, reaction with harmful elements and reaction with the crucible. The loss of Y gradually increases with increasing temperature. When the melting temperature reaches 1580℃, a sudden increase occurs, which may results from a violent reaction between the melt and the crucible.

关 键 词：NICOCRALY 真空熔炼 Y损失 温度 氧化 

分 类 号：TG174.4[金属学及工艺—金属表面处理]