摘要
研究了三种Fe-15Cr-xAl(x=0,5.10,原子分数)合金在600℃于ZnCl_2-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Al_2O_3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.
The corrosion behavior of three Fe-15Cr-xAl（x=0, 5, 10%） alloys below KCl-ZnCl2 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 Al2O3 in the inner region of the scale, which may act as a barrier by retarding the rapid migration of the reactants.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2009年第4期347-351,共5页
Chinese Journal of Materials Research
基金
国家自然科学基金50671114项目
江苏省高校自然科学基金08KJB430003项目
常州市工业科技攻关CE2008089项目资助~~
