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1345 |
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Microstructures and tribological performances of cold sprayed tin bronze based composite coatings |
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Hanlin Liao* / LERMPS - UTBM, France Xueping Guo / LERMPS, University of Technology of Belfort-Montbéliard, France Yang Gao/ Electromechanics and Materials Engineering College, Dalian Maritime University , China Christian Coddet/ LERMPS, University of Technology of Belfort-Montbéliard, France |
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In this paper, tin-bronze/TiN and tin-bronze/quasicrystalline (AlCuFeB) composite coatings were fabricated by cold spray process. Microstructure and microhardness of coatings were characterized. Ball-on-disc dry sliding wear tests were conducted in an atmospheric condition. The results show that the microhardness and density of composite coatings increase significantly compared to the pure bronze coating. The friction coefficient of coatings decrease with the introduction of the reinforcements. Furthermore, the bronze/quasicrystalline composite coating yields a lower wear rate compared to the bronze/TiN coating. This may be attributed to the good self-lubricate feature of the quasicrystalline particles in the coating. |