Abstract

In order to improve the performances of micro tillage machine blades, Ni-Co-P/BN(h) nanocomposite coatings were prepared on the surface of 65Mn by jet electrodeposition. The surface morphology, friction wear, and micro-hardness of the Ni-Co-P/BN(h) nanocomposite coatings were characterized by OLS4100, XRD, friction wear testing machine and Vickers micro-hardness tester, respectively. The corrosion resistance of coatings in the solution of 50g/L NaCl was studied. The results showed that coatings surface could get better performances when the voltage is 16V, bath temperature is 70°C, poles gap is 1.6mm and BN(h) nanoparticles concentration is 8g/L. The microstructure of Ni-Co-P/BN(h) nanocomposite coatings is uniform and dense. The surface friction coefficient of the coatings is obviously reduced, and the corrosion resistance is improved. After the heat treatment, the hardness of coatings is higher than the 65Mn matrix.

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