界面结构对纳米镶嵌颗粒熔化行为的影响  

INFLUENCE OF THE INTERFACIAL STRUCTURE ON THE MELTING BEHAVIOR OF In AND Pb NANOPARTICLES EMBEDDED IN Al MATRICES

作　　者：生红卫[1] 卢柯[1] 胡壮麒[1] 任罡[1] 彭练矛[1] 

机构地区：[1]中国科学院金属研究所,中国科学院北京电子显微镜实验室

出　　处：《材料研究学报》1996年第1期30-32,共3页Chinese Journal of Materials Research

基　　金：国家自然科学基金;中国科学院院长特别基金

摘　　要：分别研究了具有两种界面结构的Ｉｎ和Ｐｂ纳米镶嵌颗粒（Ａｌ基体）的熔化行为，发现与Ａｌ基体具有附生取向关系的Ｉｎ和Ｐｂ纳米颗粒的熔点升高，而与Ａｌ基体随机取向的Ｉｎ和Ｐｂ纳米颗粒的熔点则降低。Melting behaviors of In and Pb nanoparticles embedded in Al matrices were studied by using DSC and in situ TEM observations. It was found that the epitaxially oriented (with the Al matrix) In and Pb nanoparticles could be superheated, while the randomly oriented in and Pb nanoparticles may melt below their equilibrium melting points. Authors suggest that the melting point of the embeded nanoparticles can be either enhanceded or depressed, depending on the nature of the interfaces.

关 键 词：熔化 界面结构 纳米颗粒 镶嵌 金属材料 

分 类 号：TG111[金属学及工艺—物理冶金]