Physical properties of electroless nickel-tungsten coating on mild steels obtained from acetic bath

Mahmood, Mahmood Hameed and Harun, Nurliyana and -, Suryanto and Hilmy, Irfan (2015) Physical properties of electroless nickel-tungsten coating on mild steels obtained from acetic bath. Advanced Materials Research, 1115. pp. 230-233. ISSN 1662-8985

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Abstract

Electroless deposition of nickel tungsten on mild steel was conducted using acetic bath, containing nickel sulphate and sodium tungstate in the alkaline medium. The influence of sodium acetate and sodium tungstate on deposits was investigated and characterized using scanning electron microscope (SEM), energy dispersive X-ray spectrometer (EDX) and x-ray diffraction (XRD) to assess the phase, content and microstructure features. The surface roughness of coating was measured using atomic force microscope (AFM) while the hardness was investigated using Vickers microhardness. The results show that deposits have smooth surfaces, Ra = 0.53 µm, with a nanocrystalline structure, crystallite size hardness of deposits decreases as the concentration of sodium tungstate increases.

Item Type:	Article (Journal)
Additional Information:	6148/48506
Uncontrolled Keywords:	Electroless Coating, Nickel Tungsten, Mild Steel and Acetic Acid
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr - Suryanto
Date Deposited:	18 Jan 2016 16:01
Last Modified:	18 Jul 2016 15:05
URI:	http://irep.iium.edu.my/id/eprint/48506

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