The Role of Ti in the Preparation of SiC/7075 Aluminum Matrix Composite  

作　　者：ZHANG Wenda CHEN Chengcheng XU Hong CHE Luchang GUO Cuiping DU Zhenmin 

机构地区：[1]Department of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China [2]School of Materials Science and Engineering,North University of China,Taiyuan 030051,China [3]Southwest Technique and Engineering Institute,Chongqing 400039,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2020年第2期293-298,共6页武汉理工大学学报（材料科学英文版）

基　　金：the Natural Science Foundation of Shanxi Province,China(No.201801D121108)。

摘　　要：SiC/7075 aluminum matrix composites were prepared by a liquid stirring method.The role of Ti facilitating the preparation of SiC/7075 aluminum matrix were studied by means of direct-reading spectrometer,scanning electron microscope,energy dispersive spectrometer,X-ray diffraction and the sessile drop method.The results show that the SiC content in the SiC/7075 composite increases with an increase of Ti addition.The addition of Ti can significantly improve the wettability of SiC/Al system,there is a critical value of above 0.5%of Ti content in improving the wettability of the Al/SiC system at 1173K.The temperature of the"non wetting-wetting"transition for the(Al-2Ti)/SiC system is about 1123K,the contact angle decreases to 88°at 200 seconds and reaches a stable contact angle of 28°at 2100 seconds.

关 键 词：aluminum matrix composites Al3Ti particles SiC particles WETTABILITY 

分 类 号：TB333[一般工业技术—材料科学与工程]