| 合金元素对铸造Fe-Cr铁素体不锈钢耐浓硫酸腐蚀性能的影响 |
| |
| 引用本文： | 欧阳明辉,刘焕安,叶际宣. 合金元素对铸造Fe-Cr铁素体不锈钢耐浓硫酸腐蚀性能的影响[J]. 腐蚀与防护, 2017, 38(10). DOI: 10.11973/fsyfh-201710005 |
| |
| 作者姓名： | 欧阳明辉 刘焕安 叶际宣 |
| |
| 作者单位： | 浙江省宣达耐腐蚀特种金属材料研究院,永嘉,325105 |
| |
| 摘 要： | 采用电化学技术、浸泡腐蚀及能谱分析等研究了合金元素对铸造Fe-Cr铁素体不锈钢耐浓硫酸腐蚀行为的影响。结果表明:随铬含量的增加,Fe-Cr合金的耐浓硫酸腐蚀性能增强,单一的铬合金化不能使Fe-Cr合金在60℃,98%H2SO4中自钝化;钼能促进Fe-Cr25-Mo合金的钝化和自钝化,随钼含量的增加,Fe-Cr25-Mo合金的耐浓硫酸腐蚀性能增强;辅助合金元素镍、铜可促进Fe-Cr25Mo2合金的钝化和自钝化,而钛、铌的影响不大。
|
| 关 键 词： | 铁素体不锈钢 浓硫酸 电化学技术 合金元素 |
Effect of Alloying Elements on Corrosion Resistance of Foundry Fe-Cr Ferritic Stainless Steels in Concentrated Sulfuric Acid |
| |
| OUYANG Minghui,LIU Huanan,YE jixuan. Effect of Alloying Elements on Corrosion Resistance of Foundry Fe-Cr Ferritic Stainless Steels in Concentrated Sulfuric Acid[J]. Corrosion & Protection, 2017, 38(10). DOI: 10.11973/fsyfh-201710005 |
| |
| Authors: | OUYANG Minghui LIU Huanan YE jixuan |
| |
| Abstract: | The effects of alloying elements on the corrosion behavior of foundry Fe-Cr ferritic stainless steels in concentrated sulfuric acid were studied by electrochemical techniques,immersion corrosion and energy dispersive spectroscopy (EDS).The results show that the corrosion resistance of Fe-Cr alloys in concentrated sulfuric acid improved with the increase of Cr content.However,the single Cr alloyed Fe-Cr alloy was unable to reach selfpassivation in 98％ H2SO4 at 60 ℃.Mo addition enhanced the corrosion resistance and promoted the passivation and self-passivaiton of Fe-Cr25-Mo alloys.Elements Ni and Cu can also promoted the passivation and self-passivation of Fe-Cr25Mo2 alloys,whereas Ti and Nb only had a little influence on the passivation. |
| |
| Keywords: | ferritic stainless steel concentrated sulfuric acid electrochemical technique alloying element |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
