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Fatigue of Alumina-Chrome Carbide Composite Coating

[+] Author Affiliations
Maksim Kireitseu

National Academy of Sciences of Belarus, Minsk, Belarus

Ion Nemerenco, L. Yerakhavets

NAMATEX

Paper No. OMAE2002-28415, pp. 301-306; 6 pages
doi:10.1115/OMAE2002-28415
From:
  • ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering
  • 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 3
  • Oslo, Norway, June 23–28, 2002
  • Conference Sponsors: Ocean, Offshore, and Arctic Engineering Division
  • ISBN: 0-7918-3613-4 | eISBN: 0-7918-3599-5
  • Copyright © 2002 by ASME

abstract

The fracture and fatigue characteristics of alumina coating strengthen with chrome carbide layer, is presented and discussed. The essential aspects of the methodology include acoustic emission monitoring of crack activity and its propagation under cyclic loads. Structural analysis of the alumina revealed an effect of α, γ phases of alumina and CrC thickness on fatigue life of the coating. The fatigue life of the coatings is found to be no longer than 103 cycles. None of the coatings resist above 103 cycles. It is found to be cracks initiation and propagation in the coating interface that result in the catastrophic failure of the composite. An ultimate load resulted in intensive crack growth in CrC-Al2 O3 -Al is found to be about 2 GPa that is higher than that in alumina coating.

Copyright © 2002 by ASME

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