借助XJG-05金相显微镜、SEM-550型扫描电子显微镜和71型显微硬度计分别对镀层厚度、形貌、硬度以及成分进行分析.结果表明:镀层厚度随浸镀时间增加而增厚,且遵从抛物线规律.热浸镀铝钢在850℃扩散后扩散层为一层,由Fe2Al5组成;950℃扩散处理后扩散层为两层,外层为FeAl2,内层为FeAl和Fe3Al.可以通过测量硬度来确定扩散层的铝含量.
参考文献
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[4] | Standard specification for hot-dipped aluminum coatings on ferrous articles[A].pennsylvania |
[5] | Hot dip aluminized coatings on ferrous products[A].Tokyo |
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