Deposition characteristics of Al-12Si alloy coating fabricated by cold spraying with relatively large powder particles

W. Y. Li; C. Zhang; X. P. Guo; G. Zhang; H. L. Liao; C. Coddet

doi:10.1016/j.apsusc.2007.02.142

Deposition characteristics of Al-12Si alloy coating fabricated by cold spraying with relatively large powder particles

W. Y. Li, C. Zhang, X. P. Guo, G. Zhang, H. L. Liao, C. Coddet

Université de technologie de Belfort Montbéliard

科研成果: 期刊稿件 › 文章 › 同行评审

39 引用（Scopus）

摘要

In this paper, the microstructure, microhardness and adhesive strength of Al-12Si coating produced by cold spraying were investigated. It is found that a thick, dense and well bonded Al-12Si coating could be produced by cold spraying with a relatively large powder through the control of spray conditions. The critical velocity for large Al-12Si particles was lower than that of small Al-12Si particles. The as-deposited Al-12Si coating had the same crystal structure as Al-12Si powder. The localized interface melting occurred resulting from both the adiabatic shearing upon impact and the thermal effect of hot gas. Some fine Si particles precipitated in α-Al matrix because of the thermal effect of hot gas during coating deposition. The dispersed Si particles in Al-12Si coating improved the coating microhardness.

源语言	英语
页（从-至）	7124-7130
页数	7
期刊	Applied Surface Science
卷	253
期	17
DOI	https://doi.org/10.1016/j.apsusc.2007.02.142
出版状态	已出版 - 30 6月 2007
已对外发布	是

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abstract = "In this paper, the microstructure, microhardness and adhesive strength of Al-12Si coating produced by cold spraying were investigated. It is found that a thick, dense and well bonded Al-12Si coating could be produced by cold spraying with a relatively large powder through the control of spray conditions. The critical velocity for large Al-12Si particles was lower than that of small Al-12Si particles. The as-deposited Al-12Si coating had the same crystal structure as Al-12Si powder. The localized interface melting occurred resulting from both the adiabatic shearing upon impact and the thermal effect of hot gas. Some fine Si particles precipitated in α-Al matrix because of the thermal effect of hot gas during coating deposition. The dispersed Si particles in Al-12Si coating improved the coating microhardness.",

keywords = "Adhesive strength, Al-12Si alloy coating, Cold spraying, Microhardness, Microstructrure",

author = "Li, {W. Y.} and C. Zhang and Guo, {X. P.} and G. Zhang and Liao, {H. L.} and C. Coddet",

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AU - Li, W. Y.

AU - Zhang, C.

AU - Guo, X. P.

AU - Zhang, G.

AU - Liao, H. L.

AU - Coddet, C.

PY - 2007/6/30

Y1 - 2007/6/30

N2 - In this paper, the microstructure, microhardness and adhesive strength of Al-12Si coating produced by cold spraying were investigated. It is found that a thick, dense and well bonded Al-12Si coating could be produced by cold spraying with a relatively large powder through the control of spray conditions. The critical velocity for large Al-12Si particles was lower than that of small Al-12Si particles. The as-deposited Al-12Si coating had the same crystal structure as Al-12Si powder. The localized interface melting occurred resulting from both the adiabatic shearing upon impact and the thermal effect of hot gas. Some fine Si particles precipitated in α-Al matrix because of the thermal effect of hot gas during coating deposition. The dispersed Si particles in Al-12Si coating improved the coating microhardness.

AB - In this paper, the microstructure, microhardness and adhesive strength of Al-12Si coating produced by cold spraying were investigated. It is found that a thick, dense and well bonded Al-12Si coating could be produced by cold spraying with a relatively large powder through the control of spray conditions. The critical velocity for large Al-12Si particles was lower than that of small Al-12Si particles. The as-deposited Al-12Si coating had the same crystal structure as Al-12Si powder. The localized interface melting occurred resulting from both the adiabatic shearing upon impact and the thermal effect of hot gas. Some fine Si particles precipitated in α-Al matrix because of the thermal effect of hot gas during coating deposition. The dispersed Si particles in Al-12Si coating improved the coating microhardness.

KW - Adhesive strength

KW - Al-12Si alloy coating

KW - Cold spraying

KW - Microhardness

KW - Microstructrure

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VL - 253

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JO - Applied Surface Science

JF - Applied Surface Science

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ER -

Deposition characteristics of Al-12Si alloy coating fabricated by cold spraying with relatively large powder particles

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