金属热处理 ›› 2022, Vol. 47 ›› Issue (5): 40-46.DOI: 10.13251/j.issn.0254-6051.2022.05.006

• 材料研究 • 上一篇    下一篇

(FeCoNiCr)100-xMnx高熵合金在NaCl和NaOH溶液中的抗腐蚀性能

赵堃, 蒋鹏, 王虎虎, 王博, 王沛锦, 杨兴中   

  1. 陕西理工大学 材料科学与工程学院, 陕西 汉中 723000
  • 收稿日期:2021-12-19 修回日期:2022-03-16 出版日期:2022-05-25 发布日期:2022-06-16
  • 通讯作者: 蒋 鹏,讲师,硕士,E-mail: 13488454912@163.com
  • 作者简介:赵 堃(1988—),男,硕士研究生,主要研究方向为金属成分设计及强韧化技术,E-mail: 814286203@qq.com。
  • 基金资助:
    陕西理工大学人才项目(SLGQD1801)

Corrosion resistance of (FeCoNiCr)100-xMnx high entropy alloys in NaCl and NaOH solutions

Zhao Kun, Jiang Peng, Wang Huhu, Wang Bo, Wang Peijin, Yang Xingzhong   

  1. School of Materials Science and Engineering, Shaanxi University of Technology, Hanzhong Shaanxi 723000, China
  • Received:2021-12-19 Revised:2022-03-16 Online:2022-05-25 Published:2022-06-16

摘要: 研究了放电等离子烧结(FeCoNiCr)100-xMnx(x=4,8,12,20)高熵合金的组织结构及在NaCl和NaOH溶液中的耐腐蚀性能。结果表明,(FeCoNiCr)100-xMnx合金主要由FCC单相组织和少量BCC相组成。(FeCoNiCr)88Mn12合金在3.5wt%NaCl 溶液中具有最好的耐腐蚀性能。Mn的添加使合金在1 mol NaOH 溶液中耐腐蚀性增强。退火对合金在1 mol NaOH 溶液中抗腐蚀性能影响不大。(FeCoNiCr)100-xMnx合金在3.5wt%NaCl溶液和1 mol NaOH溶液中的抗腐蚀性能均优于304S不锈钢。

关键词: CoCrFeNiMnx高熵合金, 放电等离子烧结, 微观组织, 耐腐蚀性

Abstract: Microstructure and corrosion resistance in NaCl and NaOH solutions of the (FeCoNiCr)100-xMnx(x=4,8,12,20) high entropy alloys prepared by spark plasma sintering were studied. The results show that (FeCoNiCr)100-xMnx alloys are mainly composed of FCC single phase structure and a small amount of BCC phase. (FeCoNiCr)88Mn12 alloy has the best corrosion resistance in 3.5wt%NaCl solution. The addition of Mn enhances the corrosion resistance of the alloy in 1 mol NaOH solution. Annealing has little effect on corrosion resistance of the alloy in 1 mol NaOH solution. The corrosion resistance of the (FeCoNiCr)100-xMnx alloys in 3.5wt%NaCl solution and 1 mol NaOH solution is better than that of the 304S stainless steel.

Key words: CoCrFeNiMnx high entropy alloys, spark plasma sintering, microstructure, corrosion resistance

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