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Transient High Heat Load Performance of Atmospheric Plasma Sprayed Tungsten Coating

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Abstract

Tungsten coatings on oxygen-free copper substrates were fabricated by atmospheric plasma spraying (APS) technique. The properties of the microstructure, porosity, microhardness and oxidation of the coatings were characterized and measured. In order to evaluate the thermal properties of the APS-W coating, a high current pulsed electron beam facility was introduced to carry out the transient high heat load tests. Three power densities of 0.2, 0.5 and 1.0 GW/m2 and total pulse duration of 5 ms were performed on the coating surfaces. The surface temperature and behavior of the APS-W coatings under the transient high heat load were investigated. Obvious melting and re-solidification were found on the treated APS-W coatings, and cracks were also observed on coating surface.

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Acknowledgments

This work is supported by the Special Item of ITER Project (Domestic Research) from the Ministry of Science and Technology of China (Grant No. 2011GB110004), and the Planned S&T Program of Shenzhen (Grant No. JC201105170703A).

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Authors and Affiliations

  1. SZU-CASIPP Joint Laboratory for Applied Plasma, College of Physics Science and Technology, Shenzhen University, Room 303D, Shenzhen, 518060, China

    Fan Wang & Jianjun Huang

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  1. Fan Wang
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  2. Jianjun Huang
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Correspondence to Jianjun Huang.

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Wang, F., Huang, J. Transient High Heat Load Performance of Atmospheric Plasma Sprayed Tungsten Coating. J Fusion Energ 35, 608–612 (2016). https://doi.org/10.1007/s10894-016-0078-x

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