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| Abstract No.: |
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Scheduled at:
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Wednesday, June 04, 2008, Room 04 2:20 PM
Gasturbines 5
Coatings for mobile and stationary turbines, protection against wear, high temperature corrosion and thermal stresses, clearance control coatings for a better efficiency
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| Title: |
Creep behavior modeling of plasma sprayed yttria stabilized zirconia thermal barrier coatings
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| Authors: |
Reza Soltani* / Datec Coating Corp., Canada
Tom Coyle / University of Toronto, Canada
Javad Mostaghimi/ Univeristy of Toronto, Canada
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| Abstract: |
The purpose of this study was to determine the creep/sintering characteristics of thermally sprayed zirconia coatings and attempt to understand the influence of microstructure on the creep resistance of deposits. The major modification involved the employment of a new powder feedstock with agglomerated sub-micron size particles (Nanox), in comparison to one of the best commercially available powders (HOSP). Thick plasma sprayed coatings were prepared and their physical and mechanical properties were characterized. Creep/sintering experiments were then conducted to investigate the response of the materials when exposed to high temperatures under load. The results showed that it could be possible to correlate the splat thickness to the creep behaviour of the coatings.
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