Title: Elevated temperature solid particle erosion performance of Al2O3-3 wt% TiO2 composite coatings

Authors: Pawan Kumar Sapra, Surendra Singh, Satya Prakash, M.R. Ramesh

Addresses: Department of Mechanical Engineering, IITT College of Engineering, Kala Amb, Himachal Pradesh 173030, India. ' Department Metallurgical and Materials Engineering, Indian Institute of Technology, Roorkee, Uttaranchal 247 667, India. ' Department Metallurgical and Materials Engineering, Indian Institute of Technology, Roorkee, Uttaranchal 247 667, India. ' Department of Mechanical Engineering, Reva Institute of Technology and Management, Kattigenahalli, Yelahanka, Bangalore 560 064, India

Abstract: The operating conditions in power station boilers are conducive to erosion, both in the furnace wall and in the super heater and reheater areas, and these effects cause tube wall thinning and premature failure. The present research work has been undertaken with an objective to explore the coating potential of Al2O3-3 wt% TiO2 deposited on boiler steel T11 with detonation gun spraying process for erosion resistance. Erosion performance at room temperature as well as elevated temperature by simulating the temperature to actual working conditions of the boilers was evaluated. The eroded samples were analysed with SEM/EDX and optical profilometer.

Keywords: thermal spraying; elevated erosion testing; power station boilers; boiler steel; detonation gun spraying; erosion resistance; elevated temperature; solid particle erosion; alumina coatings; titania coatings.

DOI: 10.1504/IJSURFSE.2010.035141

International Journal of Surface Science and Engineering, 2010 Vol.4 No.4/5/6, pp.360 - 376

Published online: 09 Sep 2010 *

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