激光熔覆CoCrFeNiMnTi x高熵合金涂层的磨损与腐蚀

IF 1.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Technology Pub Date : 2023-07-13 DOI:10.1080/02670836.2023.2227459

D.C. Wang, C.L. Wu, Shenmin Zhang, C. Zhang, D.X. Zhang, X.Y. Sun

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引用次数: 0

摘要

采用激光熔覆技术在304不锈钢表面制备了CoCrFeNiMnTi x (x = 0.5, 1.0, 1.5, 2.0)高熵合金(HEA)涂层。实验结果表明，随着Ti元素的加入，CoCrFeNiMnTi x HEAs的组成相由HEA的单一FCC相演变为FCC + BCC +金属间化合物+ Laves相。CoCrFeNiMnTi x涂层的显微硬度从412.42 HV提高到573.97 HV。随着显微硬度的增加，涂层的耐磨性与硬度成正比，符合Archard关系。此外，随着Ti元素的加入，CoCrFeNiMnTi x涂层的耐蚀性呈现先增加后降低的趋势。当x = 1.0时，HEA涂层具有较低的腐蚀电流密度、较高的电荷转移电阻和较高的点蚀电位，具有较高的耐蚀性。

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Wear and corrosion of CoCrFeNiMnTi x high entropy alloy coatings by laser cladding

CoCrFeNiMnTi x (x = 0.5, 1.0, 1.5, 2.0 in atomic ratio) high entropy alloy (HEA) coatings were prepared on 304 stainless steel by laser cladding. Experimental results showed that the CoCrFeNiMnTi x HEAs constituent phase evolved from a single FCC phase for the HEA to FCC + BCC + Intermetallic + Laves phases with the addition of Ti element. The CoCrFeNiMnTi x coatings exhibited an increasing microhardness from 412.42 HV to 573.97 HV. Accompanying the increase in microhardness, the wear resistance was proportional to the hardness of the coating, which met Archard’s relationship. In addition, the corrosion resistance of the CoCrFeNiMnTi x coatings displayed an increased tendency firstly and then decreased with the addition of Ti element. And, the HEA coating with x = 1.0 possessed the highest corrosion resistance as indicated by the lower corrosion current density, high charge transfer resistance and high pitting potential.

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来源期刊

Materials Science and Technology 工程技术-材料科学：综合

CiteScore

2.70

自引率

5.60%

发文量

审稿时长

3 months

期刊介绍：《Materials Science and Technology》（MST） is an international forum for the publication of refereed contributions covering fundamental and technological aspects of materials science and engineering.