Application of HVOF Thermal Spraying inHigh Speed Gas Compressor Shafts

Authors: M.Jalali Azizpour, S.norouzi, H.mohammadi majd, H.Talebi, A.Ghamari

Abstract:

In this paper, the application of thermal spray coatings in high speed shafts by a revolution up to 23000 RPM has been studied. Gas compressor shafts are worn in contact zone with journal therefore will be undersized. Wear mechanisms of compressor shaft were identified. The predominant wear mechanism is abrasion wear. The worn surface was coated by hard WC-Co cermets using high velocity oxy fuel (HVOF) after preparation. The shafts were in satisfactory service in 8000h period. The metallurgical and Tribological studies has been made on the worn and coated shaft using optical microscopy, scanning electron microscopy (SEM) and X-ray diffraction.

Keywords: Thermal spray, Residual stress, Wear mechanism, HVOF, Gas compressor shafts.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1334930

References:

[1] U. Erning, M. Nestler, Proceedings of United Thermal Spray Conference (UTSC 99). D├╝sseldorf, March 1999, p. 462.
[2] T. Sahraoui, S. Guessasma, N.E. Fenineche, G. Montavon, C. Coddet, Materials Letters 58 (2004) 654.
[3] Y. Qiao, Y.R. Liu, T.E. Fischer, Sliding and abrasive wear resistance of thermalsprayed WC-Co coatings, Journal of Thermal Spray Technology 10 (2001) 118- 125.
[4] T. Sahraoui, S. Guessasma, N.E. Fenineche, G. Montavon, C. Coddet, Materials Letters 58 (2004) 654-660.
[5] R.J.K. Wood, B.G. Mellor, M.L. Binfield, Wear 211 (1997) 70-83.
[6] T.W. Clyne and S.C. Gill, Residual Stresses in Thermal Spray Coatings and Their Effect on Interfacial Adhesion: a Review of Recent Work, J. Therm. Spray Tech., 1996, 4, p 401-409.
[7] Q.Yang, T. Senda,A. Ohmori, Wear 254(2003)23.
[8] S.kamnis, S. Gu, Journal of thermal spray technology, vol. 19(1-2)2010, p31-41.
[9] S.Kamnis, S.Gu, T.J.Lu, comput. Mater.Sci.43(2008)1172-1182.