Characterization and Strengthening Mechanisms of Nano-Al2O3/Ni Composite Layer

Abstract:

The Al2O3/Ni composite brush plating coating with homogeneous distribution and good bonding with matrix metal Ni was prepared through adding nano-Al2O3 grains into the Ni-base electro-brush plating bath. The microstructures of the composite brush plating coating are superior to the common rapid Ni-base brush plating coating. The tribological results show that the abrasion-proof of the composite plating coating is better than that of the common plating coating not only at room temperature but also at high temperature. It is found that the plastic deformation-resistance and adhesion reduction performances of the composite plating coating were improved under strengthening effect of nano-Al2O3 grains.