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An Investigation on Temperature Distribution Within the Substrate and Nozzle Wall in Cold Spraying by Numerical and Experimental Methods

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Abstract

During cold spraying (CS), heat exchange between the hot driving gas and the solid bodies, e.g., spray nozzle and substrate, results in the temperature redistribution within the solid bodies. In this study, numerical and experimental investigations on the heating behavior of the substrate and nozzle wall were conducted to clarify the temperature distribution within the solid bodies in CS. The results show that after heating by the hot gas, the highest temperature presents at the center point of the substrate and decreases toward the substrate back surface and edge. With increasing standoff distance or decreasing inlet temperature, the substrate temperature decreases gradually, but the temperature gradient within the substrate changes little. The numerical results are consistent with the experimental measurements. Besides, it is also found that increasing the substrate size (diameter) can lead to the gradual increment in the substrate temperature. Moreover, the numerical study on the temperature distribution within the nozzle wall reveals that the highest temperature presents at the throat section of the nozzle and that the nozzle material significantly affects the temperature distribution within the nozzle wall.

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Acknowledgment

The authors would like to thank the financial support from the Aoxiang Star Project of NPU, and the Program for the New Century Excellent Talents in University by the Ministry of Education of the People’s Republic of China (NCET-08-0463). The project was also sponsored by the Research Fund of the State Key Laboratory of Solidification Processing (NPU, China) (Grant No. 69-QP-2011), the National Natural Science Foundation of China (51005180) and the 111 Project (B08040).

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Authors and Affiliations

  1. State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi’an, 710072, Shaanxi, People’s Republic of China

    Wen-Ya Li

  2. School of Energy and Power Engineering, Dalian University of Technology, Dalian, 116024, Liaoning, People’s Republic of China

    Shuo Yin & Xiao-Fang Wang

  3. Marine Engineering College, Jimei University, Xiamen, 361021, Fujian, People’s Republic of China

    Xueping Guo

  4. LERMPS (Laboratoire d’Etudes et de Recherches sur les Matériaux, les Procédés et les Surfaces), Université de Technologie de Belfort-Montbéliard, Site de Sévenans, 90010, Belfort Cedex, France

    Hanlin Liao & Christian Coddet

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  1. Wen-Ya Li
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  2. Shuo Yin
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  3. Xueping Guo
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  4. Hanlin Liao
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  5. Xiao-Fang Wang
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  6. Christian Coddet
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Correspondence to Wen-Ya Li.

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Li, WY., Yin, S., Guo, X. et al. An Investigation on Temperature Distribution Within the Substrate and Nozzle Wall in Cold Spraying by Numerical and Experimental Methods. J Therm Spray Tech 21, 41–48 (2012). https://doi.org/10.1007/s11666-011-9685-2

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  • DOI: https://doi.org/10.1007/s11666-011-9685-2

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