通过激光熔覆沉积用WC颗粒增强CoCrFeMnNi高熵合金的耐腐蚀性

Corrosion Resistance Enhancement of CoCrFeMnNi High-Entropy Alloy with WC Particle Reinforcements via Laser Melting Deposition.

作者信息

Peng Zhen, Fan Zize, Abdullah Muhammad Raies, Ren Congcong, Li Jinfeng, Gong Pan

机构信息

School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China.

Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, China.

出版信息

Materials (Basel). 2023 Jun 29;16(13):4701. doi: 10.3390/ma16134701.

DOI:10.3390/ma16134701

PMID:37445015

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10342999/

Abstract

In the present work, a WC particle-reinforced CoCrFeMnNi high-entropy alloy (HEA) was fabricated by laser melting deposition (LMDed). The LMDed CoCrFeMnNi high-entropy alloy (CoCrFeMnNi) composite is primarily comprised of a face-centered cubic (FCC) crystal structure. However, in the case of CoCrFeMnNi with 2.5 wt.% WC, it exhibits a combination of an FCC matrix and a ceramic phase known as MC. The corrosion behavior of CoCrFeMnNi and CoCrFeMnNi with 2.5 wt.% WC particle in 0.5 M HSO was comparatively investigated. Compared with CoCrFeMnNi, the passive film formed on the CoCrFeMnNi with 2.5 wt.% WC had a more stable and stronger protective property. The corrosion current density of the CoCrFeMnNi with 2.5 wt.% WC dropped by 149.1% compared to that of the CoCrFeMnNi, indicating that the CoCrFeMnNi with 2.5 wt.% WC had better corrosion resistance than that of the CoCrFeMnNi.

摘要

在本工作中，通过激光熔覆沉积（LMDed）制备了WC颗粒增强CoCrFeMnNi高熵合金（HEA）。激光熔覆沉积的CoCrFeMnNi高熵合金（CoCrFeMnNi）复合材料主要由面心立方（FCC）晶体结构组成。然而，对于含有2.5 wt.% WC的CoCrFeMnNi，它呈现出FCC基体和一种称为MC的陶瓷相的组合。对CoCrFeMnNi以及含有2.5 wt.% WC颗粒的CoCrFeMnNi在0.5 M HSO中的腐蚀行为进行了对比研究。与CoCrFeMnNi相比，在含有2.5 wt.% WC的CoCrFeMnNi上形成的钝化膜具有更稳定且更强的保护性能。含有2.5 wt.% WC的CoCrFeMnNi的腐蚀电流密度相较于CoCrFeMnNi下降了149.1%，这表明含有2.5 wt.% WC的CoCrFeMnNi比CoCrFeMnNi具有更好的耐腐蚀性。