In this study, mechanical properties of Ni-P-B4C-PTFE hybrid coating produced by Electroless method were investigated. Ni-P, Ni-P-PTFE, Ni-P-B4C and Ni-P-B4C-PTFE coatings were created on Aircraft Grade Aluminum samples. Boron carbide particles 4 grams per liter and PTFE Suspension 10 grams per liter were added to Electroless baths with average percentage of phosphorus. Pin on disc was used in order to determine the wear resistance and friction coefficient. Wear and corrosion resistance of samples was tested. Finally, results of four types of coatings were compared. The results showed that adding boron carbide particles resulted in increased corrosion resistance, but adding PTFE particles resulted in decreased corrosion resistance. Ni-P-PTFE composite coating hadthe lowest friction coefficient and Ni-P-B4C composite coating had the highest corrosion resistance and hardness, and Ni-P-B4C-PTFE hybrid coatings showed the best wear resistance.

Full text: IJEIR_1220_Final.pdf