主要研究P-RE复合作用提高钢铁材料耐大气腐蚀性的机制.通过模拟工业大气环境的周期浸润实验室加速试验,制备锈层;并通过X射线衍射等手段对锈层进行分析.结合薄液膜下初期腐蚀过程观察,并对腐蚀过程中微区pH值变化进行跟踪,结果发现:P-RE复合作用促进保护性锈层组织α-FeOOH形成;P-RE复合作用改变夹杂物性质,影响微区pH值变化,影响腐蚀过程发生,促进保护性锈层产生.
The mechanism of P-RE combined action improving atmospheric corrosion resistant performance of iron and steel material was studied. The Rust layers of experimental steels were made by using an accelerating industrial atmospheric corrosion test of dry-wet cyclic immersion. Furthermore XRD were used to measure and analyze rust layers. Under thin water film, the initial corrosion processes of experimental steels were observed and the changes of micro-area PH value of experimental steels were measured. The results are as follows: P-RE combined action promotes the formation of α-FeOOH. P-RE combined action changes properties of inclusion, affects the change of PH value, influences the process of corrosion and promotes the formation of protective rust layers.
参考文献
| [1] | Yamashita M;Miyuki H;Matsuda Y et al.The Long Term Growth of the Protective Rust Layer Formed on Weathering Steel by Atmospheric Corrosion during a Quarter of a Century[J].Corrosion Science,1994,36(02):283. |
| [2] | Misawa T .The Mechanism of Atmospheric Rusting and the Effect of Cu and P on the Rust Formation of Low Alloy Steel[J].Corrosion Science,1971,13(11):35. |
| [3] | 汪兵;刘清友;毛新平.稀土对碳素钢模拟工业性大气腐蚀环境下耐蚀性能的影响[A].北京:全国低合金钢委员会,2008:500. |
| [4] | 中国科学院金属研究所磷偏析研究组 .磷在钢中的偏析及钢的脆性[J].金属学报,1981,17(02):124. |
| [5] | 张东彬;吴承建;杨让 .Fe-P与Fe-P-ce合金中的晶界磷偏聚及其对脆性的影响[J].金属学报,1991,27(02):A111. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%