A comparative study of the microstructure and corrosion resistance of Fe-based/B4C composite coatings with Ni-added or Cu-added by vacuum cladding

被引：7
作者：
Yu, Huan [1 ]
Luo, Zongan [1 ]
Zhang, Xin [1 ]
Feng, Yingying [1 ]
Xie, Guangming [1 ]
机构：
[1] Northeastern Univ, State Key Lab Rolling Technol & Automat, Shenyang 110819, Peoples R China
来源：
MATERIALS LETTERS | 2023年 / 335卷
关键词：
Composite coating; Vacuum cladding; Hard phases; Corrosion resistance; 2-BODY ABRASIVE WEAR; BEHAVIOR; ALLOY;
D O I：
10.1016/j.matlet.2022.133730
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In order to improve the corrosion resistance of Fe-based/B4C composite coating, Fe-based/B4C composite coating without and with Ni-added or Cu-added were prepared by vacuum cladding, and the corrosion behaviour of the coatings in 0.5 mol/L HCl solution was studied. The results showed that the coatings were metallurgically bonded to the steel substrate. Due to the additions of Ni or Cu, the coating matrix underwent phase trans-formation and formed martensite, the morphology of hard phases (carboboride and boride) also changed into irregular blocks, and hard phases in Cu-added coating was finer in size. After 1 and 7 days of immersion corrosion, the corrosion morphology of coating with Ni-added or Cu-added presented a small number of corrosion holes compared with the non-added coating, indicated that the additions of Ni or Cu significantly improved the corrosion resistance of the coating. And the surface corrosion of Cu-added coating was the shal-lowest, showing the best corrosion resistance.
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页数：4
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