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Liu Y.,Shenzhen University | Liu Y.,Applied Low Temperature Plasma Laboratory | Wang F.,Shenzhen University | Wang F.,Applied Low Temperature Plasma Laboratory | And 10 more authors.
Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering | Year: 2011

Tungsten (W) coatings were fabricated on copper (Cu) by atmospheric plasma spray (APS) and high-speed atmospheric plasma spray (HAPS) technique. The properties of the porosity, oxygen content, and the bonding strength were measured. The results obtained indicated that the HAPS-W coating shows beneficial properties particularly in terms of porosity and oxygen content. The porosities of the HAPS-W coatings are less than 3% and most of the pores were smaller than 1 μm. The oxygen content of the APS-W and HAPS-W coatings measured by EDS were w(O) = 1.25% and w(O) = 0.41% respectively. The results suggest that the HAPS-W coating shows better performance than that of the APS-W coating and some of the results of the HAPS-W coating has achieved the reported effect of vacuum plasma spray (VPS) W coating. Compared with VPS, the HAPS technique greatly reduces the complexity and cost of production. The HAPS-W technique provides a convenient and low cost way to obtain good-quality coatings, and it has great feasibility and practicality in engineering.

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