经济耐候钢的研究

Study of Cost-effective Weather-resisting Steel

系统研究了Mn、Cu含量及腐蚀环境体系对协同作用的影响,并利用电化学测试、扫描电镜、XRD等材料分析技术对带锈电极的腐蚀行为、锈层组成、结构和性质进行了深入分析,阐述了Mn-Cu合金化协同作用的机制;利用Mn-Cu合金化的协同作用,成功开发出Mn-Cu型经济耐候钢和实现工业化试生产。实验表明：热轧Mn-Cu钢具有良好的耐候性,其耐候性略优于传统的09CuPTiRE和SPA-H耐候钢。

In this study, the influence of the content of Mn and Cu, and atmospheric environments on synergistic effect were investigated systematically by wet/dry cyclic accelerated corrosion test. In order to elucidate the anti-corrosion mechanisms in alloy elements and provide some useful information for the development of novel costeffective weathering steel, the corrosion performance of rusted specimens, rust composition, the structure and properties of rust layer were analyzed by material analytical techniques, such as electrochemical measurement, SEM, XRD, and so on. In practical contrast corrosion tests, Mn-Cu-alloying steel rolled also shows good corrosion resistance. Its anti-corrosion is slightly better than those of conventional 09CuPTiRE and of SPA-H weathering steels.