Title: Evaluation of detonation gun sprayed alumina titania coatings

Authors: Pawan Kumar Sapra, Surendra Singh, Satya Prakash

Addresses: Metallurgical and Materials Engineering Department, Indian Institute of Technology Roorkee, Roorkee-247 667 (UA), India. ' Metallurgical and Materials Engineering Department, Indian Institute of Technology Roorkee, Roorkee-247 667 (UA), India. ' Metallurgical and Materials Engineering Department, Indian Institute of Technology Roorkee, Roorkee-247 667 (UA), India

Abstract: This paper presents the results of the investigation of the structure and properties of the coatings deposited with Detonation gun technique. Alumina Titania (Al2O3-3Wt%TiO2). Coating was deposited on metallic substrates using a D-gun Technique. Sound Coating of 200 μm to 220 μm could be obtained. Investigation of the microstructure and characteristics of the coatings after the preparation was performed by X-ray diffraction, Scanning electron microscopy and EDX analysis. Microstructure suggested that the coating constructed mainly of alumina and Titania Splats which has also been confirmed by EDX analysis. The developed coating by this method is highly dense and tightly adherent.

Keywords: detonation gun deposition; alumina titania coatings; EDX analysis; aluminium oxide; titanium dioxide; microstructure.

DOI: 10.1504/IJSURFSE.2008.021351

International Journal of Surface Science and Engineering, 2008 Vol.2 No.5, pp.400 - 408

Published online: 20 Nov 2008 *

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