Material Property Evaluation of Thick Thermal Barrier Coating Systems

[+] Author and Article Information
R. C. Brink

Caterpillar Inc., Peoria, IL

J. Eng. Gas Turbines Power 111(3), 570-577 (Jul 01, 1989) (8 pages) doi:10.1115/1.3240292 History: Received August 01, 1988; Online October 15, 2009


Coating system optimization is a critical step in the design and development of plasma-sprayed thermal barrier coatings (TBC’s) for diesel engines. Physical and mechanical property measurements and bench screening tests were performed to evaluate the candidate TBC systems. Additional understanding of the material behavior and failure mechanisms of thick TBC’s gained from the property measurements and bench testing was identified. A specific graded zirconia (ZrO2 )/bond (NiCrAlY) coating material system with good strain tolerance and fatigue resistance was selected for follow-on diesel engine durability testing.

Copyright © 1989 by ASME
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