Krishnan, R.M. and Sriveeraraghavan, S. and Sobha , J. and Kennedy, C.J. and Sekar, R. and Mary, J.G. (1999) Effect of various sulphates on chromium plating. Bulletin of Electrochemistry , 15 (7-8). pp. 233-237. ISSN 0256-1654

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Abstract

For chromium plating, along with chromic acid a small quantity of sulphate ion is very much essential. In the absence of sulphate ion the chrome bath will not produce any bright deposit but will produce only brown film. The sulphate ion is nonually introduced as sulphuric acid at a ratio of 100:1 to chromic acid. In this paper, in order to study the effect of other sulphate ions, it is aimed to study the effect of cations associated with sulphates. The SUlphate to the chrome bath was introduced in the form of sulphuric acid, sodium sulphate, ammonium sulphate, potassium sulphate and chromium sulphate. Hull Cell experiments were carried out to study the nature of the deposit. Plating expe:;ments were also carried out to study the current efficiency, rate of buildup, porosity, hardness, and nature of deposit and the results are presented.

Item Type:	Article
Uncontrolled Keywords:	Chromium plating; sulphales; Hull Cell experiments
Subjects:	Industrial Metal Finishing
Divisions:	UNSPECIFIED
Depositing User:	ttbdar CECRI
Date Deposited:	20 Feb 2012 09:37
Last Modified:	20 Feb 2012 09:37
URI:	http://cecri.csircentral.net/id/eprint/1143

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