Overview on advanced thermal barrier coatings

Vaßen, R.; Stöver, D.; Mack, D. E.; Steinke, T.; Jarligo, M.O.

doi:10.1016/j.surfcoat.2010.08.151

Journal Article

Overview on advanced thermal barrier coatings

Vaßen, R.FZJ* ; Jarligo, M. O.FZJ* ; Steinke, T.FZJ* ; Mack, D. E.FZJ* ; Stöver, D.FZJ*

2010
Elsevier Science Amsterdam [u.a.]

Surface and coatings technology 205, 938 - 942 (2010) [10.1016/j.surfcoat.2010.08.151]

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Please use a persistent id in citations: http://hdl.handle.net/2128/25540 doi:10.1016/j.surfcoat.2010.08.151

Abstract: During the last decade a number of ceramic materials, mostly oxides have been suggested as new thermal barrier coating (TBC) materials. These new compositions have to compete with the state-of-the-art TBC material yttria stabilized zirconia (YSZ) which turns out to be difficult due to its unique properties. On the other hand YSZ has certain shortcomings especially its limited temperature capability above 1200 degrees C which necessitates its substitution in advanced gas turbines.In the paper an overview is tried on different new materials covering especially doped zirconia, pyrochlores, perovskites, and aluminates. Literature results and also results from our own investigations will be presented and compared to the requirements. Finally, the double-layer concept, a method to overcome the limited toughness of new TBC materials, will be discussed. (C) 2010 Elsevier B.V. All rights reserved.

Keyword(s): J ; Thermal barrier coatings (auto) ; Zirconia (auto) ; Pyrochlores (auto) ; Perovskites (auto) ; Aluminates (auto) ; Thermal conductivity (auto)