Title: Sliding wear characterisation of D-gun sprayed alumina-based ceramic composite coatings

Authors: Sundaram Rajakumar; L. Vijayaraghavan; M.M. Mayuram; R. Krishnamurthy

Addresses: Department of Mechanical Engineering, MNM Jain Engineering College, Chennai – 600 097, India ' Department of Mechanical Engineering, IIT-Madras, Chennai – 600 036, India ' Department of Mechanical Engineering, IIT-Madras, Chennai – 600 036, India ' Department of Mechanical Engineering, IIT-Madras, Chennai – 600 036, India

Abstract: Design of tribo-contact pair is largely centred on efficiency with consideration for minimal wear rate. Wear resistant ceramic/ceramic-composite coatings are widely employed to conserve material in numerous wear combating situations. Thermal sprayed ceramic coatings are widely used in a number of critical applications wherein the present scenario looks for better coatings. The ceramic composite coatings of alumina-matrix were developed through detonation flame spraying and tested for their sliding wear behaviour at different temperatures mating against hardened steel and alumina ceramic coated surface. The results show that among the ceramic depositions alumina-zirconia ceramic composite exhibits least sliding wear especially under higher temperature environment.

Keywords: pin-on-disk; ceramic composites; composite coatings; detonation spraying; coefficient of friction; sliding wear; wear resistance; alumina matrix; zirconia; detonation flame spraying; temperature; hardened steel.

DOI: 10.1504/IJAT.2014.060691

International Journal of Abrasive Technology, 2014 Vol.6 No.3, pp.197 - 213

Received: 01 May 2013
Accepted: 16 Sep 2013
Published online: 21 Jun 2014 *

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