Berlin 2015 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 36: Poster Session I
DS 36.58: Poster
Donnerstag, 19. März 2015, 09:30–12:00, Poster A
Tribological properties of Ni-P-SiO2 nano-composite coating on Aluminum — •Sahar Salehi1, Sina Sadreddini2, and Mohsen Ahmadi3 — 1Metallurgical & Materials Engineering Department, School of Chemical & Materials Engineering, Islamic Azad university, Shiraz, Iran. — 2Department of Materials Science and Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran. — 3Department of Mining and Metallurgical Engineering, Amir kabir University of Technology, Hafez Ave., P.O. Box 15875, Tehran 4413, Iran.
In this study, the effect of different concentrations of SiO2 nano sized particles in the bath on deposition rate, surface morphology and wear behavior of Ni-P-SiO2 Composite coatings were investigated. The deposition rate of coating was influenced by incorporation of SiO2 Particles. The microstructural observations were performed with field emission scanning electron microscopy (FESEM). The amount of SiO2 was examined by Energy Dispersive Analysis of X-Ray (EDX). Results showed that for the coating produced at 12.5 g/l of nano SiO2 in the bath, the amount of SiO2nanoparticles co-deposited and microhardness reached a maximum value at 4.5 wt% and 453 VH, respectively. Furthermore, the wear behavior of the coating was studied. Nano-composite coating led to improve the wear resistance of the aluminum substrate.