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Thick thermal barrier coatings for diesel enginesCaterpillar's approach to applying thick thermal barrier coatings (TTBC's) to diesel engine combustion chambers has been to use advanced modeling techniques to predict engine conditions and combine this information with fundamental property evaluation of TTBC systems to predict engine performance and TTBC stress states. Engine testing has been used to verify the predicted performance of the TTBC systems and provide information on failure mechanisms. The objective Caterpillar's program to date has been to advance the fundamental understanding of thick thermal barrier coating systems. Previous reviews of thermal barrier coating technology concluded that the current level of understanding of coating system behavior is inadequate and the lack of fundamental understanding may impeded the application of TTBC's to diesel engines. Areas of TTBC technology being examined in this program include powder characteristics and chemistry; bond coat composition; coating design, microstructure, and thickness as they affect properties, durability, and reliability; and TTBC 'aging' effects (microstructural and property changes) under diesel engine operating conditions. Methods to evaluate the reliability and durability of TTBC's have been developed that attempt to understand the fundamental strength of TTBC's for particular stress states.
Document ID
19960020890
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Beardsley, M. Brad
(Caterpillar Tractor Co. Peoria, IL United States)
Date Acquired
August 17, 2013
Publication Date
October 1, 1995
Publication Information
Publication: Thermal Barrier Coating Workshop
Subject Category
Nonmetallic Materials
Accession Number
96N24413
Funding Number(s)
CONTRACT_GRANT: DE-AC05-84OR-21400
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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