摘要
利用低温气体多元共渗技术对Q235钢试样进行了处理,测试了样品的抗蚀性能,分析了样品的微观组织结构。利用空间群与热力学理论探讨了微观组织结构与抗蚀性能间的关系。Q235钢经多元共渗后抗蚀性能大幅度提高,Fe-N化合物中含硫、氮可以使抗蚀性能进一步提高。其原因是氮、硫等元素减少了样品表面的自由电子,提高了化合物的电极电位。
Q235 steel sample was treated by low temperature gas muhicomponent thermochemical treatment technology. Then the corrosion resistance of steel sample was tested and the microstructure was also analyzed. The relationship between the corrosion resistance and microstructure was discussed by using space group and thermodynamics theories. Results indicate that the corrosion resistance of Q235 steel treated like that is improved greatly and can be improved further when the elements N and S are dissolved into Fe-N compound. The reason is that S and N elements can reduce the free electrons on the sample surface and enhance the potential of compound.
出处
《材料保护》
CAS
CSCD
北大核心
2004年第11期42-43,共2页
Materials Protection
基金
铁道部科技研究项目(970445)
关键词
低温气体多元共渗
Q235钢
微观组织
抗蚀性能
空间群
low temperature gas muhicomponent thermochemical treatment technology
mie.rostructure
corrosion resistance
space group
