为探讨合金元素铬和钼改善高纯度铁素体不锈钢点蚀性能的作用机理,应用XPS定量分析技术,研究了三个系列十二种不同铬钼含量的高纯度铁素体不锈钢在中性(pH=6.9)含1NCl~-的介质中不同电位下钝化膜及膜下过渡层的组成和钝化膜的厚度等。结果表明,合金元素钼不仅能提高钝化膜的稳定性,还能有效地抑制过渡层中铬的贫化,使再钝化能力得到改善,从而提高材料的耐点蚀性能。在本实验条件下不发生点蚀的材料,其过渡层都是由于基体含钼而不出现贫铬现象。
In order to look into the mechanism by which alloyed chromium and molybdenum improve the pitting corrosion resistance of high purity ferritic stainless steel to a quantitative XPS technique was employed to study the composition and thickness of the passive film and transient layer as well, Some twelve materials with various Cr and Mo contents were studied in 1N Cl~--containing neutral solution. The results showed that Mo can rather effecetivly retard the depletion of Cr in the transient layer and improve the stability of the passive film itself. The resistance to pitting of the materials containing Mo was thus bettered up because of the enhancement of repassivity of the transient layer.
参考文献
| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] | |
| [8] | |
| [9] | |
| [10] | |
| [11] | |
| [12] | |
| [13] | |
| [14] | |
| [15] | |
| [16] | |
| [17] | |
| [18] | |
| [19] | |
| [20] | |
| [21] |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%