【摘要】 研究了三种Fe-15Cr-xAl（x=0,5.10,原子分数）合金在600℃于ZnCl₂-KCl盐膜下的腐蚀行为.与氧化相比,所有合金在盐膜下均发生加速腐蚀,生成了疏松多孔的腐蚀产物膜,且发生内腐蚀.合金的腐蚀速率随着铝含量的增加而降低.铝的作用主要是由于Al₂O₃在腐蚀产物内层富集,充当阻挡层有效地阻碍了反应介质在膜中的传递.更多还原

【Abstract】 The corrosion behavior of three Fe-15Cr-xAI（x=0,5,10%） alloys below KCl-ZnCI₂ deposits in air was investigated at 600℃.Compared to their oxidation in air,all the alloys suffered from enhanced corrosion with the formation of non-protective porous scale,particularly in combination with internal attack of matrix.The corrosion rates decreased with increasing aluminum content.The effect of aluminum was mainly attributed to the enrichment of AI₂O₃ in the inner region of the scale,which may act as a barrier by retarding the rapid migration of the reactants.更多还原