材料科学
合金
透射电子显微镜
扫描电子显微镜
铝
复合材料
复合数
图层(电子)
衍射
化学工程
纳米技术
物理
光学
工程类
作者
Zhuqun Shi,Jenn‐Ming Yang,J.C. Lee,Di Zhang,H.I. Lee,Rui Wu
标识
DOI:10.1016/s0921-5093(00)01943-2
摘要
The passive oxidation behavior of SiC particles at elevated temperatures has been studied. The evolution of interfacial reaction products in 2014 aluminum alloy composite reinforced with oxidized-SiC particles after extended thermal exposure at elevated temperatures were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction. Although it could prevent the interfacial reaction between SiC particles and aluminum alloy, the preoxidation of SiC particles resulted in the formation of other interfacial reaction products. The results showed that at elevated temperatures nano-MgO formed initially on the surface of the oxidized SiC particles and then turned into nano-MgAl2O4 crystal due to the reaction between the SiO2 and aluminum alloy containing Mg. TEM observations indicated that the oxidized layer on SiC particles was uniform and had a good bonding with SiC and aluminum alloy.
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