Corrosion and tribo-corrosion behaviors of nano-lamellar Ni1.5CrCoFe0.5Mo0.1Nbx eutectic high-entropy alloy coatings: The role of dual-phase microstructure

被引：96
|
作者：
Wen, Xin [1 ]
Cui, Xiufang [1 ]
Jin, Guo [1 ]
Liu, Yufei [1 ]
Zhang, Ye [1 ]
Zhang, Xuerun [1 ]
Liu, Erbao [1 ]
Tian, Haoliang [2 ]
Fang, Yongchao [1 ]
机构：
[1] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Inst Surface Interface Sci & Technol, Key Lab Superlight Mat & Surface Technol,Minist E, Harbin 150001, Peoples R China
[2] Aero Engine Corp China, Beijing Inst Aeronaut Mat, Aviat Key Lab Sci & Technol Adv Corros & Protect, Beijing 100095, Peoples R China
来源：
CORROSION SCIENCE | 2022年 / 201卷
基金：
中国国家自然科学基金;
关键词：
Eutectic high-entropy alloy coating; Laser cladding; Corrosion behavior; Passivation; Tribo-corrosion behavior; FERRITIC STAINLESS-STEEL; PASSIVE FILMS; MECHANICAL-PROPERTIES; ELECTROCHEMICAL-BEHAVIOR; ELECTRONIC-STRUCTURE; EROSION-CORROSION; PITTING CORROSION; NB CONTENT; RESISTANCE; MO;
D O I：
10.1016/j.corsci.2022.110305
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, the effect of the dual-phase microstructure (FCC and Laves phases) of Ni1.5CrCoFe0.5Mo0.1Nbx (x = 0.55 hypoeutectic, 0.68 eutectic and 0.8 hypereutectic) high-entropy alloy coatings on their corrosion and tribocorrosion behaviors were studied. In a 3.5 wt.% NaCl solution, the FCC phase behaved as anodic sites. With the increase of Nb content, the passive regions of the coatings increased slightly. Mott-Schottky analysis revealed that the improvement in the performance of the passive film is mainly attributed to the reduced point-defect density. The increased Laves phase changed the wear mechanism of the coatings from adhesive to abrasive wear.
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页数：17
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