All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Abstract

Fabrication and Microhardness properties of SiC and Gr reinforced Ni-based nanocomposite thin film

Author(s): Abbas Fahami*, Bahman Nasiri-Tabrizi

Nickel based nanocomposite thin films were prepared from a Watts type electrolyte containing reinforcementÂ’s particles (SiC and Gr) to deposit on steel St-37 substrate. The effect of different bath temperatures was investigated to optimize high quality coatings. The experimental outcomes were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive Xray spectroscopy (EDS), Elemental mapping analysis system, field emission scanning electron microscopy (FE-SEM), and Micro hardness tester. Based on XRD results, the main peaks in the samples were nickel, nickel oxide and SiC phases. Microscopic observations illustrated a cluster like structure which consisted of some fine sphere particles with an average particle size of about 65 nm. Results revealed that optimum bath parameters were the temperature of 45 (°C). The hardness of the coatings was also measured and found to be 412 to 543 (Hv) depending on the bath parameters and the reinforcements weight percentage (wt.%) in the Ni matrix. Ultimately, the results demonstrated that the electrochemical parameter had considerable influences on the morphology and mechanical properties of the NiSiCGr coatings.


Share this       
zxzx