用扫描电镜、电子探针和X射线衍射方法对热浸Al-Si渗层的组织进行了化学成分和结构分析,探讨了形成机制。
The microstructure and chemical composition of the hot impregnated Al-Si coat-ing on 08Al steel sheet were analysed by SEM, EPMA and X-ray diffraction. The coatingis xonstitated by three parts: the outer is an α-Al solid solution of enriched Si and γ- (Fe,Al, Si) phases; the intermediate FeAl_3 and Fe_2Al_5 phases mainly and the inner neighbouringupon the substrate mainly Fe_2Al_5 phase.
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