Balaji, R. and Pushpavanam, M. and Yogeshkumar, K. and Subramanian, K. (2006) Electrodeposition of Copper-Tin-Ptfe composite coatings. Indian Surface Finishing, 3 (3-4). pp. 381-391. ISSN 0972-9364

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Abstract

The aim of this research is to obtain lubricant composite coatings of bronze (90% copper and 10% Tin) with PTFE (polytetrafluoroethylene particles over mild steel substrate. The electrodeposition was carried out from an alkaline bath containing cyanide. The composite coatings were prepared hy means of CECD (Conventional Electrochemical deposition) and SCD (Sediment Codeposition) techniques. The PTFE particles involved were of the average size of 3-5 pm. The incorporation of PTFE in the composite coatings was investigated with respect to the PTFE concentration in bath, cathode current density. and mode of deposition. The cathode efficiency of the coating was calculated. The morphology of the eleetrodeposited c.omposites was studied using Scanning Electron Microscope (SEM) The PTFE distributions in the composite coatings are uniform at low concentration of PTFE in the bath but at high concentration the PTFE particles were agglomerated. The PTFE incorporation in SCD technique is higher than that of CECD technique. Physical properties of the composites including hardness, wear resistance and coefficient of friction, were measured.

Item Type:	Article
Uncontrolled Keywords:	Electroplating; bronze-PTFE; hardness; wear resistance; roughness
Subjects:	Electrodeposition Industrial Metal Finishing
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	25 Jan 2012 12:25
Last Modified:	25 Jan 2012 12:25
URI:	http://cecri.csircentral.net/id/eprint/628

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