Please use this identifier to cite or link to this item:
Title: Development of Ceramic Coatings Using Red Mud, A Solid Waste of Alumina Plants
Authors: Satapathy, Alok
Mishra, S C
Ananthapadmanabhan, P V
Sreekumar, K P
Issue Date: 2006
Publisher: Widner University
Citation: Proceedings of the 21st International Conference on Solid Waste Technology and Management, Widener University, Chester, USA, 26-29 March, 2006, P 232-240
Abstract: Plasma Spraying is a surface modification technique that combines particle melting, rapid solidification and consolidation in a single process. But as high cost of spray grade powders limits the adoption of this technique, exploring newer and cheaper materials suitable for plasma spray coating has drawn a lot of attention. This work reports an attempt to spray coat red mud (the waste generated in alumina producing plants) on different metal substrates. Plasma sprayed coatings of red mud have been developed at different operating power levels of the plasma gun on aluminium and copper substrates. Coating adhesion strength and deposition efficiency were studied at various operating conditions. Characterization of the coatings includes micro hardness measurement and scanning electron microscopy (SEM). It was observed that the operating power appreciably influences the coating adhesion strength and coating thickness. Coatings deposited at very low and very high power levels show poor adhesion. Maximum interface adhesion strength of 8MPa was recorded at operating power of 12 kW. This work establishes ‘red mud’ as a potential coating material, which may be suitable for wear resistant applications. It also suggests a value added utilization of this industrial waste.
Description: Copyright for this article belongs to the publisher of the Proceedings
Appears in Collections:Conference Papers

Files in This Item:
File Description SizeFormat 
Alok SWT2006.pdf98.38 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.