What is it about?
Thermal barrier coatings (TBCs) are a protective surface layer on parts in jet engines, and its function is to protect the metal parts from the high temperature from the combusting fuels. In most cases, TBCs, which is usually a ceramic, cannot adhere firm enough to the metals parts. To solve such a problem, another intermediate layer is employed to ‘glue’ the TBCs, which is call the bond coat. Both the material and the shape of the bond coat have significant impact on the TBCs adhesion strength. This article is about how the authors manipulate the shapes of the bond coat to have a better adherence of the TBCS.
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Why is it important?
Heat protection devices occupied a significant portion of the overall cost of jet engines, and is of crucial importance for the safety of jet engines. By improving the TBCs adhesion, air travel and electricity generation can be safer and cheaper.
Perspectives
Putting down my perspective is by its initiative a personal trial of the KUDOS system. I have been in collaboration with Shanghai Jiao Tong University's Thermal Barrier Coatings Group for several years in many industrial and academic areas. It was a great pleasure to be a co-author for this article, particularly as the science adviser for its first author.
Dr Xin Wang
Shanghai Jiao Tong University
Read the Original
This page is a summary of: Thermal barrier coatings with interface modified by 3D mesh patterns: Failure analysis and design optimization, Journal of the American Ceramic Society, December 2017, Wiley,
DOI: 10.1111/jace.15386.
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