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Pulsed laser processing of thermal barrier coatings

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Abstract

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.

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Author notes

  1. K. Mohammed Jasim

    Present address: Scientific Research Council, Baghdad, Iraq

Authors and Affiliations

  1. Department of Materials, Imperial College of Science, Medicine and Technology, Exhibition Road, SW7 2BP, London, UK

    K. Mohammed Jasim, R. D. Rawlings & D. R. F. West

Authors
  1. K. Mohammed Jasim
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  2. R. D. Rawlings
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  3. D. R. F. West
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Jasim, K.M., Rawlings, R.D. & West, D.R.F. Pulsed laser processing of thermal barrier coatings. J Mater Sci 26, 909–916 (1991). https://doi.org/10.1007/BF00576767

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  • DOI: https://doi.org/10.1007/BF00576767

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