气体爆破喷涂过程中粉末颗粒飞行行为的数值研究

IF 3.2 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS
Zhiwu Wang, Hao Long, Jingtao Xiao, Minqiang Li, Yimin Zhan, Weifeng Qing
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Numerical Study of Powder Particle Flight Behavior during Gas Detonation Spraying Process

Numerical Study of Powder Particle Flight Behavior during Gas Detonation Spraying Process

In the process of detonation spraying, the deposition state and the distribution of powder particles determine the performance of the coatings. High-performance coatings require powder particles to be sprayed onto the substrate at high velocity, in a molten state, and in a concentrated distribution. The effects of particle diameter, right loading distance(L), and stand-off distance(S) on the flight velocity, temperature, and distribution of alumina particles during the spraying process were studied in this paper, which was achieved through two-way coupling between the particle and fluid phases. The simulation results indicated that differences among the diameters of the various powder particles led to velocity and temperature stratification within particle stream during the spraying process. As the right loading distance increased, the deposition velocity and temperature of particles increased; while, the powder particles were more concentrated. And as the stand-off distance increased, the deposition velocity of powder particles increased; however, it might make the temperature of particles fell below melting point and the divergence of the stream of powder particles increased.

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来源期刊
Journal of Thermal Spray Technology
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.
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