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Creep of plasma-sprayed-ZrO2 thermal-barrier coatingsSpecimens of plasma-sprayed-zirconia thermal-barrier coatings with three different porosities and different initial particle sizes were deformed in compression at initial loads of 6900, 13,800, and 24,100 kPa (1000, 2000, and 3500 psi) and temperatures of 1100, 1250, and 1400 C. The coatings were stabilized with lime, MgO, and two different concentrations of Y2O3. Creep began as soon as the load was applied and continued at a constantly decreasing rate until the load was removed. Temperature and stabilization had a pronounced effect on creep rate while the stress, particle size, and porosity had a lesser effect. Creep deformation was due to cracking and particle sliding.
Document ID
19830041055
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Firestone, R. F.
(IIT Research Inst. Chicago, IL, United States)
Logan, W. R.
(IIT Research Inst. Chicago, IL, United States)
Adams, J. W.
(IIT Research Institute Chicago, IL, United States)
Bill, R. C., Jr.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 11, 2013
Publication Date
October 1, 1982
Subject Category
Nonmetallic Materials
Accession Number
83A22273
Distribution Limits
Public
Copyright
Other

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