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On Properties of Plasma Sprayed Oxide and Metal-Oxide Coatings FREE

[+] Author Affiliations
O. Knotek, R. Elsing, N. Strompen

Rheinisch-Westfälische Technische Hochschule Aachen, Templergraben, Aachen

Paper No. 84-GT-289, pp. V005T11A009; 12 pages
doi:10.1115/84-GT-289
From:
  • ASME 1984 International Gas Turbine Conference and Exhibit
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; Process Industries; Technology Resources
  • Amsterdam, The Netherlands, June 4–7, 1984
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7950-4
  • Copyright © 1984 by ASME

abstract

Alumina containing 3% TiO2, Y2O2 (13%)-stabilized zirconia and zirconia (13% Y2O3)-molybdenum powder mixtures (70:30 and 30:70) were sprayed by plasma unter standard conditions on several steel substrates. Intermediate nickelchromium metal layers were used. The adhesive strength of the coatings under static and dynamic stress, the thermal shock resistance were tested as well as wear and corrosion resistance, porosity and other properties of these oxide and oxide metal compound layers. Resistance against friction-abrasion, sometimes in combination with corrosion, can be controlled by pure oxide layers or, dependent on the kind of chemical reactions and mechanical behaviour by oxide molybdenum compounds. Some theoretical aspects of the behaviour of the tested coatings will be discussed.

Copyright © 1984 by ASME
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