有色金属科学与工程2025，Vol.16Issue(4)：503-509,7.DOI:10.13264/j.cnki.ysjskx.2025.04.001
纳米化和Cr含量对Co-Fe-Cr合金在NaCl溶液中腐蚀行为的影响
Influences of nano crystallization and Cr content on corrosion behavior of Co-Fe-Cr alloy in NaCl solutions
摘要
Abstract
The conventional and nanometer-sized powders prepared by powder metallurgy(PM)and mechanical alloying(MA)were pressed into PM,MA Co-20Fe-20Cr and PM,MA Co-20Fe-30Cr bulk alloys using vacuum hot-pressing technology.The corrosion behavior of these alloys in 0.5 mol/L NaCl solution and the influence of nano crystallization and Cr content were investigated by electrochemical testing technology.The results show that under the experimental conditions,the corrosion current densities of the two nanometer alloys decreased by 5.066 9 μA/cm2 and 1.670 3 μA/cm2,and the charge transfer resistances increased by 29 675 Ω/cm2 and 30 947 Ω/cm2,respectively,compared with their conventional-sized counterparts.Nano crystallization can improve the corrosion properties of the alloys.Moreover,the corrosion current densities of the two Co-20Fe-30Cr alloys decreased by 3.5811 μA/cm2 and 0.184 5 μA/cm2,and the charge transfer resistances increased by 10 633 Ω/cm2 and 11 905 Ω/cm2,respectively,compared with those of the corresponding Co-20Fe-20Cr alloys.A 10%increase in Cr content improves corrosion performance.关键词
Co-Fe-Cr合金/纳米化/Cr含量/腐蚀行为Key words
Co-Fe-Cr alloy/nanocrystalline/Cr content/corrosion behavior分类
矿业与冶金引用本文复制引用
张昊鑫,王秀,韩漾,曹中秋,张轲,王艳..纳米化和Cr含量对Co-Fe-Cr合金在NaCl溶液中腐蚀行为的影响[J].有色金属科学与工程,2025,16(4):503-509,7.基金项目
国家自然科学基金资助项目(51271127) （51271127）
辽宁省重点研发计划资助项目(2018304025) （2018304025）
