Fabrication and Corrosion Resistance of Al-Co-Ce Amorphous Alloy Coating by a Combined Process of Thermal Spraying and Pulsed Electron Beam Surface Remelting

IF 3.2 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Journal of Thermal Spray Technology Pub Date : 2024-03-26 DOI:10.1007/s11666-024-01761-z

Chunling Li, Huang Chen, Hongbo Wang, Mingli Lv, Tinglei He, Shuangqing Sun, Songqing Hu

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Abstract

The surface modification technology based on high current pulsed electron beam (HCPEB) can eliminate the porous structure of thermal sprayed coatings and obtain amorphous coatings with excellent corrosion resistance. In this study, Al-Co-Ce master alloy and powder were firstly prepared, followed by the preparation of an Al-Co-Ce alloy coating on Q235 steel substrate using high velocity flame (HVOF) spraying technology. Finally, HVOF sprayed coating was irradiated and remelted by HCPEB to change its porous crystalline microstructure into dense and amorphous form which greatly enhances its corrosion resistance. The combination of thermal spraying and HCPEB surface remelting proposed in this study provides a new process for preparing Al-Co-Ce amorphous alloy coatings.

Graphic Abstract

Diagram of surface structural transformation of Al-Co-Ce coating

Abstract Image

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通过热喷涂和脉冲电子束表面重熔联合工艺制作铝-铜-铈非晶合金涂层并提高其耐腐蚀性能

基于高电流脉冲电子束（HCPEB）的表面改性技术可以消除热喷涂涂层的多孔结构，获得具有优异耐腐蚀性能的非晶态涂层。本研究首先制备了 Al-Co-Ce 母合金和粉末，然后采用高速火焰（HVOF）喷涂技术在 Q235 钢基材上制备了 Al-Co-Ce 合金涂层。最后，用 HCPEB 对 HVOF 喷射涂层进行辐照和重熔，使其多孔结晶微观结构转变为致密的非晶态，从而大大提高了其耐腐蚀性能。本研究提出的热喷涂和 HCPEB 表面重熔相结合的方法为制备 Al-Co-Ce 非晶合金涂层提供了一种新工艺。

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来源期刊

Journal of Thermal Spray Technology 工程技术-材料科学：膜

CiteScore

5.20

自引率

25.80%

发文量

198

审稿时长

2.6 months

期刊介绍： From the scientific to the practical, stay on top of advances in this fast-growing coating technology with ASM International''s Journal of Thermal Spray Technology. Critically reviewed scientific papers and engineering articles combine the best of new research with the latest applications and problem solving. A service of the ASM Thermal Spray Society (TSS), the Journal of Thermal Spray Technology covers all fundamental and practical aspects of thermal spray science, including processes, feedstock manufacture, and testing and characterization. The journal contains worldwide coverage of the latest research, products, equipment and process developments, and includes technical note case studies from real-time applications and in-depth topical reviews.