摘要
用扫描电子显微镜、电子能谱仪和X射线衍射仪对SiC/Fe3Al界面固相反应区的成分分布、微结构及相组成等进行分析研究。结果表明:在1 050℃和1 100℃的热处理温度下经10 h扩散反应后,SiC/Fe3Al界面固相反应区由Fe3Si、石墨态C和Fe-Si-Al三元化合物(FeSiAl5及FeSi3Al9)构成,SiC/Fe3Al界面固相反应区由调整的C沉积物区(M-CPZ)和均匀的C沉积物区(R-CPZ)(从SiC侧至Fe3Al侧)构成,调整的C沉积物区的形成归因于SiC的不连续分解。
The morphologies, microstructures and element composition distributions of the reaction zones were studied by scanning electron microscope （SEM）, energy disperse spectroscopy （EDS） and X-ray diffraction analyzer （XRD）. The results show that the SiC/Fe3Al interracial solid state reaction zone is composed of Fe3Si, graphitic carbon precipitates and the Fe-Si-Al ternary compounds（FeSiAl5 and FeSi3Al9） after the SiC/Fe3AI planar interface couples were annealed at 1 050 and 1 100℃ for different time. The reaction zone is consisted of the modulated carbon precipitation zone （M-CPZ） and the random carbon precipitation zone （R-CPZ） from the SiC terminal to the Fe terminal. The formation of the M-CPZ is due to the discontinuous decomposition of SiC.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2008年第5期812-817,共6页
The Chinese Journal of Nonferrous Metals
基金
安徽省自然科学基金资助项目(050440704)
