利用扫描电镜(SEM)观察白云鄂博矿烧结用失效高铬铸铁篦条的表面氧化膜形貌,进行成分能谱分析(EDS),测定氧化膜中氟含量,结合X射线衍射(XRD)对氧化膜进行物相分析,分析含氟烧结料用高铬铸铁篦条的失效机理.结果表明,在高温运行中,烧结料的F、S、Na、K等使篦条基材产生腐蚀,篦条腐蚀膜中结构疏松的Na2SO4、K2SO4、FeF3和低熔点Ni·NiS共晶使其表面不能形成致密连续的腐蚀膜,从而造成失效.
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