Influences of different reinforcement particles on performances of electroless composites

Abstract

In this work, nickel–cobalt–phosphorus composites co-deposited with three different particles (aluminium oxide, silicon nitride and silicon carbide) were, respectively, prepared on ASCM20 + 5Fe aluminium alloy by electroless plating. The effects of the different reinforcement particles on the morphology, composition, microstructure, microhardness, wear resistance and corrosion resistance of composites were investigated. The results show that the largest incorporation amount of particles in number density, the finest grains, the highest microhardness, the best wear resistance and the lowest average friction coefficient are found to occur on the silicon carbide reinforced coating. The best corrosion resistance is observed on the coating co-deposited with aluminium oxide.

Keywords:

• Reinforcement particles
• Nickel–cobalt–phosphorus
• Electroless
• Composites
• Wear
• Corrosion

Acknowledgement

This work was supported by Natural Science Foundation Project of CQ CSTC (No. cstc2015jcyjA50035), Fundamental Research Funds for the Central Universities (No. 106112014CDJZR14300050), National Natural Science Foundation (No. 11544010 and No. 31271014), and Visiting Scholar Foundation of Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education (No. CQKLBST-2015-003).