Thermal Fracture of Multilayer Ceramic Thermal Barrier Coatings

[+] Author and Article Information
Y. R. Takeuchi, K. Kokini

Purdue University, Ray W. Herrick Laboratories, School of Mechanical Engineering, West Lafayette, IN 47907

J. Eng. Gas Turbines Power 116(1), 266-271 (Jan 01, 1994) (6 pages) doi:10.1115/1.2906803 History: Received February 24, 1992; Online April 24, 2008


Controlled experiments and a corresponding analytical model were developed to investigate the reasons for crack initiation in multilayer ceramic thermal barrier coatings. The experiments and model determined that surface cracks form as a result of tensile stresses created following stress relaxation in the ceramic at steady-state high temperatures (about 900°C–1100°C). Interface cracks generated by out-of-plane stresses are affected by the presence of these surface cracks and thermal transients and, possibly, edge effects.

Copyright © 1994 by The American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.





Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In