摘要
采用显微分析、力学性能试验和腐蚀失重法研究了硅的含量变化（1．61-14．93％）对铁基合金组织和力学性能的影响以及不同硅含量的铁基合金在不同浓度硫酸（20％～60％）中的耐蚀特点。试验结果表明：当铁基合金的硅含量增加到9．92％以上时，其基体组织主要是高硅铁素体；随着硅含量的增加，铁基合金的冲击韧性减小，硬度提高；硅含量达到14．93％时，对各种浓度的硫酸都是耐蚀的，且腐蚀速率不大于0．12665g／（m^2·h）；而当硫酸的浓度达到60％时，各种硅含量的铁基合金都是耐蚀的，其腐蚀速率不超过0．59954g／（m^2·h）。
The effect of Si content on the microstructure and mechanical properties of iron-base alloys and the characterization of corrosion resistance in various concentration H2SO4 were studied. The high silicon ferrite was the basis microstructure when the Si content in Fe-based alloys was increased to more than 9. 92%. As the Si content increased, the impact toughness of Fe-based alloys decreased and the hardness increased. They were corrosion resistant to all concentrations of H2SO4 and the rate of corrosion no more than 0. 12665g/（m^2 · h） when the Si content was 14. 93%. The Fe-base alloys with any Si content were corrosion resistant to H2SO4 with a concentration up to 60% and the corrosion rate was less than 0. 59954g/（m^2 · h）.
出处
《腐蚀与防护》
CAS
北大核心
2006年第10期492-495,共4页
Corrosion & Protection
关键词
硅
铁基合金
组织
力学性能
耐蚀性
Silicon
Iron-base alloy； Microstructure
Mechanical property
Corrosion resistance
