Li Feng, Chang Guan, Ji-rong Chang, Hai-min Zhai, Guo-sheng An, and Wen-sheng Li, Preparation and performance of a cold gas dynamic sprayed high-aluminum bronze coating, Int. J. Miner. Metall. Mater., 25(2018), No. 11, pp. 1354-1361.
Cite this article as:
Li Feng, Chang Guan, Ji-rong Chang, Hai-min Zhai, Guo-sheng An, and Wen-sheng Li, Preparation and performance of a cold gas dynamic sprayed high-aluminum bronze coating, Int. J. Miner. Metall. Mater., 25(2018), No. 11, pp. 1354-1361.
Research Article

Preparation and performance of a cold gas dynamic sprayed high-aluminum bronze coating

+ Author Affiliations
  • Corresponding author:

    Wen-sheng Li    E-mail:

  • Received: 10 March 2018Revised: 6 May 2018Accepted: 11 June 2018
  • By mixing preheated high-aluminum bronze powders with different amounts of Al2O3 powder, a low-pressure cold-sprayed coating was prepared and sprayed onto a Cr12MoV steel substrate. The hardness of the coating and the bonding strength between the coating and the substrate were tested with a HV-1000 microhardness tester and a mechanical universal testing machine. The surface microstructure, cross-section and tensile fracture surface of the coating were observed with a scanning electron microscope (SEM). Correspondingly, the influences of the preheat treatment temperature of the bronze powder and the Al2O3 content on the coating performance were investigated. The results indicate that the hardness of bronze powders decreased and the coating deposition rate increased after the preheating treatment of the bronze powder. The Al2O3 content in the mixed powders contributed to the deformation of bronze powders during the spraying process. This trend resulted in varied performance of the coating.
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