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.
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.
参考文献
| [1] | |
| [2] | |
| [3] |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%