Synthesis and characterization of nickel-iron-silicon nitride nanocomposite

Marita, Yusrini and Yaacob, Iskandar Idris (2010) Synthesis and characterization of nickel-iron-silicon nitride nanocomposite. Advanced Materials Research, 97-101. pp. 1360-1363. ISSN 1022-6680

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Abstract

Nickel-iron-silicon nitride nanocomposite thin films were prepared by electrodeposition technique. The deposition was performed at current density of 11.5 A dm-2. Nano-size silicon nitride was mixed in the electrolyte bath as dispersed phase. The effects of silicon nitride nanoparticulates in the nickel-iron nanocomposite thin films were investigated in relation to the amount of silicon nitride in the plating bath. X-ray diffraction (XRD) analysis showed that the deposited nickel iron film has face-centered cubic structure (FCC). However, a mixture of bodycentered cubic (BCC) and face-centered cubic (FCC) phases were observed for nickel iron-silicon nitride nanocomposite films. The crystallite size of Ni-Fe nanocomposite coating decreased with increasing amount of silicon nitride in the film. From elemental mapping procedure, Si 3n4 nanopaticles were uniformly distributed in the Ni-Fe film. The presence of silicon nitride increased the hardness of the film. The microhardness of the nickel-iron nanocomposite increased from 495 HV for nickel-iron film to 846 HV for nickel-iron nanocomposite film with 2 at. % Si. The coercivity of Ni-Fe nanaocomposite films increases with decreasing crystallite size. © (2010) Trans Tech Publications.

Item Type:	Article (Journal)
Additional Information:	6524/16399
Uncontrolled Keywords:	Electroplating; Nanocomposite; Nickel-iron alloy coating; Si3n 4 nano-particulates
Subjects:	T Technology > TJ Mechanical engineering and machinery
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Maryam Hijrah Samsuri (PT)
Date Deposited:	01 Feb 2012 10:29
Last Modified:	01 Feb 2012 10:29
URI:	http://irep.iium.edu.my/id/eprint/16399

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