论文部分内容阅读
研究了铸铁在铝液中的浸蚀机理，发现铸铁在铝液中是通过铝原子的扩散，形成铁铝合金层后剥落和溶解造成浸蚀的。铸铁中的片状石墨对铝原子的扩散有很好的阻碍作用，并在铸铁表面上形成由石墨碳、Al_4C_3和铁铝化合物组成的保护层，进一步提高铸铁在铝液中的耐浸蚀性能。获得均匀分布的细小A型石墨，消除碳化物有利于提高耐浸蚀性能。
The corrosion mechanism of cast iron in molten aluminum was studied. It was found that the cast iron was dissolved in molten aluminum by the diffusion of aluminum atoms to form an iron-aluminum alloy layer, which then peeled off and dissolved. The flake graphite in cast iron has a good impediment to the diffusion of aluminum atoms and forms a protective layer composed of graphite carbon, Al_4C_3 and iron-aluminum compounds on the cast iron surface to further improve the corrosion resistance of cast iron in molten aluminum. Get uniform distribution of small A-type graphite, carbide removal is conducive to improving corrosion resistance.