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Graded Thermal Barrier Coating Systems for gas turbine applications
Author(s) -
Leushake U.,
Krell T.,
Schulz U.
Publication year - 1997
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.19970280817
Subject(s) - thermal barrier coating , coating , sintering , materials science , limiting , thermal , gas turbines , composite material , mechanical engineering , engineering , thermodynamics , physics
Improved thermal barrier coatings can lead to increased engine operating efficiency. A significant problem is that multilayer systems are not thermally stable at elevated temperatures. Phenomena such as interdiffusion, oxidation and sintering take place, limiting coating lifetime. In order to extend lifetimes and/or increase service temperatures several modifications can be made to coating‐substrate systems. Some solutions involve the utilization of the functionally graded material concept. In this paper, potential applications for functionally graded materials in thermal barrier coating systems are discussed, and research results are summarized providing an overview of the state‐of‐the‐art.