P-RE复合添加提高钢铁材料耐大气腐蚀性能的机制研究

来源期刊：钢铁2010年第2期

论文作者：陈小平 王向东 刘清友 米丰毅 汪兵 李玉素

文章页码：90 - 94

关键词：耐候钢； 碳钢； 大气腐蚀

Key words：weathering steel； carbon steel； atmospheric corrosion

摘    要：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。

Abstract: 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.