基于固液扩散偶研究Mg-40Al与Mg-20Ce的界面反应（英文）  

Interfacial Reaction Between Mg-40Al and Mg-20Ce Using Liquid-Solid Diffusion Couples

作　　者：戴甲洪 谢红梅[1] 蒋斌 彭程[1] 姜中涛[4] 杨青山[5] 潘复生 Dai Jiahong;Xie Hongmei;Jiang Bin;Peng Cheng;Jiang Zhongtao;Yang Qingshan;Pan Fusheng(Yangtze Normal University,Chongqing 408100,China;State Key Laboratory of Mechanical Transmissions,Chongqing University,Chongqing 400044,China;Chongqing Academy of Science and Technology,Chongqing 401123,China;Chongqing University of Arts and Sciences,Chongqing 402160,China;Chongqing University of Science and Technology,Chongqing 401331,China)

机构地区：[1]长江师范学院,重庆408100 [2]重庆大学机械传动国家重点实验室,重庆400044 [3]重庆科学技术研究院,重庆401123 [4]重庆文理学院,重庆402160 [5]重庆科技学院,重庆401331

出　　处：《稀有金属材料与工程》2018年第7期2042-2048,共7页Rare Metal Materials and Engineering

基　　金：Chongqing Science and Technology Commission(2014jcyjjq0041,2015zdcy-ztzx50003);National Natural Science Foundation of China(51531002,51474043);National Key Research and Development Program of China(2016YFB0301104);Education Commission of Chongqing Municipality(KJZH14101,KJ1601302);Fundamental Research Funds the Central Universities(CK2016B18);Fundamental Research Funds for the Yangtze Normal University(2016KYQD15,2016XJQN32)

摘　　要：研究了Mg-40Al与Mg-20Ce固液界面在475、500和525℃下保温5～30 min的界面反应和扩散层的生长动力学。结果发现,在扩散层中由于Al元素和Ce元素反应生成Al_(11)Ce3、Al_3Ce和Al_2Ce金属化合物。金属化合物的体积分数随着扩散温度的升高而增加。扩散层的生长满足抛物线生长规律,扩散层的扩散激活能为(42±3.7)kJ/mol。实验研究的固液扩散为理解合金熔炼过程中金属化合物的形成提供了理论基础。Interfacial reactions and growth kinetics between molten Mg-40 A1 and solid Mg-20 Ce were investigated. Reaction temperatures were 475, 500 and 525 ℃,with reaction time ranging from 5 to 30 min. The results show that Al_（11）Ce_3, Al_3 Ce and Al_2 Ce are formed via the reaction of Al and Ce in the diffusion reaction layers. The volume fraction of the intermetallic compounds in the diffusion reaction layers increases with temperature increasing. The growth kinetics of the diffusion reaction layers well conform to the parabolic law. The activation energy for the growth of the diffusion reaction layers is（42±3.7） kJ/mol. Liquid-solid diffusion experiment helps to better understand the formation of compounds in the smelting process. Kinetics data are provided for the formation of the compound during the smelting process.

关 键 词：镁 扩散 界面 金属合金物 动力学 

分 类 号：TG146.22[一般工业技术—材料科学与工程]