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Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/1660

Title: Dependence of Adhesion Strength of Plasma Spray on Coating Surface Properties
Authors: Behera, Ajit
Mishra, S C
Keywords: Plasma spray coating
adhesion strength
porosity
Issue Date: Apr-2012
Publisher: STM Journals
Citation: Journal of Materials & Metallurgical Engineering, Volume 2, Issue 1, April 2012, Pages 23-30
Abstract: It is well known that thermal plasma spray coatings have diversified utilizations, but not vividly in use, mainly because of high cost of spray grade powder, for development of thick coating > 50 μm on metal substrates. Present investigation aims at depositing plasma spray coating on metals using low-cost/waste materials. A mixture of fly-ash + 20 weight percent of Quartz + 20 weight percent of illmenite is used for coating on copper and mild steel substrates. The powder mixture is plasma sprayed by different operating power levels (11 to 21 kW) of the plasma torch. The coatings are characterized for their adhesion strength, porosity and deposition efficiency. It is observed that with increasing operating power level, the adhesion strength increases up to a certain power level, and then it remains nearly steady with further increase in torch input power. A maximum of 6.56 MPa adhesion strength is obtained on the coating developed on mild steel. It is observed that coating adhesion is m...
Description: Copyright for this paper belongs to STM Journals
URI: http://hdl.handle.net/2080/1660
ISSN: 2231–3818
Appears in Collections:Journal Articles

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