Pulsed laser processing of thermal barrier coatings
- 51 Downloads
Results are reported of the effects of surface melting (sealing) produced by a 1 kW laser in pulsed mode on the structure of plasma-sprayed 8wt% yttria partially stabilized zirconia (YPSZ); pulse lengths in the range of 1 to 90msec were used. Smooth surfaces were produced with shallow cracks at values of laser energy 5 to 40 J. Comparison of the data is made with results obtained by sealing using continuous wave CO2 laser processing.
KeywordsPolymer Zirconia Pulse Laser Yttria Smooth Surface
Unable to display preview. Download preview PDF.
- 1.W. J. Brindley andR. A. Miller,Adv. Mater. Proc. 136 (1989) 29.Google Scholar
- 3.F. Vasiliv, V. Pencea, V. Manoliv, I. Dinca andC. Sarbu,Amer. Ceram. Soc. Bull. 64 (1985) 1268.Google Scholar
- 6.R. F. Smart andJ. A. Catherall, “Plasma Spraying” (Mills and Boon, London, 1972) pp. 55–68.Google Scholar
- 7.D. P. H. Hasselman andP. S. Jitendra,Ceram. Bull. 58 (1979) 856.Google Scholar
- 8.R. D. Maier, C. M. Scheuermann andC. W. Andrews,ibid. 60 (1981) 555.Google Scholar
- 11.K. Mohammed Jasim, D. R. F. West andR. D. Rawlings, in “Laser Processing for Industry (Laser 5)”, edited by A. N. Lan and S. K. Ghosh, (iitt, France, 1989) p. 90.Google Scholar
- 15.K. Mohammed Jasim, D. R. F. West, W. M. Steen andR. D. Rawlings, Laser Materials Processing (“ICALEO '88”) edited by G. Brack (Springer-Verlag IFS (Publications) Ltd. UK in association with Laser Institute of America, 1989)Google Scholar
- 16.K. Mohammed Jasim, R. D. Rawlings andD. R. F. West, unpublished work, 1989.Google Scholar
- 17.F. S. Galsasso andK. Veeltri,Ceram. Bull. 2 (1983) 253.Google Scholar
- 18.S. Dallaire andP. Cielo,Metall. Trans. 13B (1982) 497.Google Scholar