An investigation on temperature distribution within the substrate and nozzle wall in cold spraying by numerical and experimental methods

Wen Ya Li, Shuo Yin, Xueping Guo, Hanlin Liao, Xiao Fang Wang, Christian Coddet

科研成果: 期刊稿件文献综述同行评审

31 引用 (Scopus)

摘要

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.

源语言英语
页(从-至)41-48
页数8
期刊Journal of Thermal Spray Technology
21
1
DOI
出版状态已出版 - 1月 2012

指纹

探究 'An investigation on temperature distribution within the substrate and nozzle wall in cold spraying by numerical and experimental methods' 的科研主题。它们共同构成独一无二的指纹。

引用此