Thermal Stresses Under Engine Heat Flux—Part 1: Ceramic Coating on Metal Substrate

[+] Author and Article Information
B. E. Sheets, K. Kokini

Purdue University, School of Mechanical Engineering, West Lafayette, IN 47907

J. Energy Resour. Technol 114(4), 291-297 (Dec 01, 1992) (7 pages) doi:10.1115/1.2905956 History: Received November 01, 1990; Revised April 29, 1992; Online April 16, 2008


The thermal stresses in a ceramic coating bonded to a metal substrate generated by heat flux conditions in an engine were studied. Edge delamination of the coating was related to the displacements of an interface crack between the ceramic and the metal. The effects of varying the thermal expansion coefficients of the ceramic, the bond coat and the metal, thin moduli of elasticity, their thicknesses and the initial stress-free temperature were determined.

Copyright © 1992 by The American Society of Mechanical Engineers
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