Mg-Al_4C_3中间合金的原位合成研究  

In Situ Synthesized Mg-Al_4C_3 Master Alloy

作　　者：刘生发[1] 苏伟[1] 韩辉[1] 康柳根[1] 王小虎[1] 李波[1] 

机构地区：[1]武汉理工大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2008年第9期722-724,共3页Special Casting & Nonferrous Alloys

基　　金：湖北省科技攻关项目资助项目(2007AAl01C37)

摘　　要：基于热力学计算,借助差热分析(DTA)、X射线衍射(XRD)、扫描电镜(SEM)及能谱分析(EDS),研究了原位合成Mg-Al4C3中间合金的组织与结构。结果表明,采用Mg-Al-C三元体系,在合成温度和保温时间分别不小于700℃和1h条件下,可成功制备Mg-Al4C3中间合金。此外,探讨了Al4C3的形成机制。Microstructure and constituent of in situ synthesized Mg-Al4C3 master alloy were analyzed with the help of DTA (differential thermal analysis),XRD(X-ray diffraction),SEM (scanning electron microscope) and EDS(energy dispersive spectrum) based on thermodynamics calculation. The results indicate that Mg-Al4C3 master alloy can be successfully synthesized by in-situ reaction at more than 700 ℃ for more than 1 h in Mg-Al-C system. In addition,formation mechanism of Al4C3 particle was expounded.

关 键 词：Mg-Al4C3 中间合金 原位合成 机理 

分 类 号：TG146.22[一般工业技术—材料科学与工程]