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Deposition behavior of multi-particle impact in cold spraying process

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Abstract

In the practical cold-spraying process, a number of particles impact onto a substrate and then form a coating. To study the deformation behavior and multi-particle interactions, single-particle, two-particle, and three-particle impacts were simulated using the AN-SYS/LS-DYNA version 970. A copper coating was prepared and scanning electron microscopy (SEM) was employed to analyze the microstructures of the powders and the coating. Numerical results reveal that the critical deposition velocity is 600 m/s for a copper particle/copper substrate. The particles deform more fully due to multi-particle interactions, such as tamping, interlocking, and extrusion effects. The compression ratio increases from 40% to 70% as a result of the tamping effect. This is beneficial for achieving the cold-sprayed coating. The multi-particle morphology and compression ratio in the experiment are consistent with those of simulation results. Based on these results, the coating of high performance can be prepared through selecting appropriate parameters and suitable pre-treatment processes.

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Authors and Affiliations

  1. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, China

    Xiang-lin Zhou, Xiang-kun Wu, Hui-hua Guo, Jian-guo Wang & Ji-shan Zhang

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  1. Xiang-lin Zhou
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  2. Xiang-kun Wu
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  3. Hui-hua Guo
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  4. Jian-guo Wang
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  5. Ji-shan Zhang
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Correspondence to Xiang-lin Zhou.

Additional information

This work was financially supported by the National Natural Science Foundation of China (Nos.50871019 and 50874009) and the National Superiority Discipline Innovation Platform Project (SKL-AMM-CS).

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Zhou, Xl., Wu, Xk., Guo, Hh. et al. Deposition behavior of multi-particle impact in cold spraying process. Int J Miner Metall Mater 17, 635–640 (2010). https://doi.org/10.1007/s12613-010-0367-8

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  • DOI: https://doi.org/10.1007/s12613-010-0367-8

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