文献类型：期刊文献

英文题名：Enhanced corrosion resistance of CoCrFeNiTi high entropy alloy through the addition of VC

作者：Luo, Fangyan[1,2];Yin, Yu[3];Jin, Hongtao[1];Chen, Zehuan[1];Shi, Wenqing[4];Huang, Jiang[1,2]

机构：[1]Guangdong Ocean Univ, Sch Elect & Informat Engn, Zhanjiang 524088, Guangdong, Peoples R China;[2]Guangdong Ocean Univ, Guangdong Prov Key Lab Intelligent Equipment South, Zhanjiang 524088, Peoples R China;[3]Sun Yat Sen Univ, Sch Adv Mfg, Shenzhen 518107, Peoples R China;[4]Guangdong Ocean Univ, Sch Mat Sci & Engn, Yangjiang 529500, Guangdong, Peoples R China

年份：2025

卷号：511

外文期刊名：SURFACE & COATINGS TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:001500367300001)、、EI(收录号：20252218494691)、Scopus(收录号：2-s2.0-105005939857)、WOS

基金：Supported by the National Natural Science Foundation of China (No. 62073089) , and Fund of Guangdong Provincial Key Laboratory of Intelligent Equipment for South China Sea Marine Ranching (Grant NO. 2023B1212030003)

语种：英文

外文关键词：High entropy alloy; Laves phase; Corrosion mechanism

外文摘要：In this study, a new method is proposed to incorporate VC (Vanadium Carbide) particles into CoCrFeNiTi high-entropy alloy (HEA) coatings to improve their corrosion resistance. VC improves the corrosion resistance of CoCrFeNiTi HEA coatings in three main ways. First, the VC can achieve phase control and change the anode and cathode of the corroded microcell in the coating, thus significantly reducing the rate of electronic loss of the coating. Secondly, VC promotes the in-situ generation of TiC in the CoCrFeNiTi coating. The TiC reacts with H2O during corrosion to form Ti2O3, accelerating the formation of the passivation film and enhancing the coating's corrosion resistance. Third, the presence of V5+ reduces the number of oxygen vacancies and the lattice distortion caused by ion substitution, thus enhancing the stability of the passivated film.