Effect of Gas-Dynamic Spraying Temperature on Diffusion and Transformations of Phase Composition and Microstructure During Formation of Coatings Based on Copper and Zinc

IF 0.6 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

Metal Science and Heat Treatment Pub Date : 2024-12-14 DOI:10.1007/s11041-024-01071-9

V. E. Arkhipov, L. I. Kuksenova, G. V. Moskvitin, M. S. Pugachev

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Abstract

The process of formation, the structure, and the phase composition of coatings based on copper and zinc and deposited by cold gas-dynamic spraying are studied. It is shown that a multiphase structure is formed in the coating based on a solid solution of copper in zinc, a solid solution of zinc in copper and solid solutions based on electron compounds CuZn₃ and Cu₅Zn₈. At a low spraying temperature (270°C), the formation of the structure is mainly influenced by interboundary diffusion. The total diffusion rate is D_c = 0.15 × 10^–12 m²/sec. When the spraying temperature is increased to 360°C and higher values (450°C), the vacancy diffusion mechanism prevails. The diffusion rate increases to D_c = 0.56 × 10^–12 m²/sec, which is accompanied by an increase in the mass fraction of the transformation products. A model of formation of the multiphase gradient coating structure is suggested and the influence of the spraying parameters on the formation of the structure is discussed.

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气动力喷涂温度对铜、锌基涂层扩散、相组成和显微组织转变的影响

研究了冷气动力喷涂铜、锌基涂层的形成过程、组织和相组成。结果表明：铜在锌中的固溶体、锌在铜中的固溶体以及电子化合物CuZn3和Cu5Zn8的固溶体在镀层中形成了多相结构。在较低的喷涂温度（270℃）下，组织的形成主要受边界间扩散的影响。总扩散速率为Dc = 0.15 × 10-12 m2/sec。当喷涂温度提高到360℃及更高的温度（450℃）时，空位扩散机制占优势。扩散速率增大到Dc = 0.56 × 10-12 m2/sec，相变产物质量分数增大。提出了多相梯度涂层结构的形成模型，并讨论了喷涂参数对多相梯度涂层结构形成的影响。

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来源期刊

Metal Science and Heat Treatment 工程技术-冶金工程

CiteScore

1.20

自引率

16.70%

发文量

102

审稿时长

4-8 weeks

期刊介绍： Metal Science and Heat Treatment presents new fundamental and practical research in physical metallurgy, heat treatment equipment, and surface engineering. Topics covered include: New structural, high temperature, tool and precision steels; Cold-resistant, corrosion-resistant and radiation-resistant steels; Steels with rapid decline of induced properties; Alloys with shape memory effect; Bulk-amorphyzable metal alloys; Microcrystalline alloys; Nano materials and foam materials for medical use.