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Thermocyclic Behavior of Differently Stabilized and structured EB‐PVD thermal barrier coatings
Author(s) -
Schulz U.,
Fritscher K.,
Leyens C.,
Peters M.,
Kaysser W. A.
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.19970280811
Subject(s) - thermal barrier coating , microstructure , materials science , electron beam physical vapor deposition , physical vapor deposition , cubic zirconia , evaporation , substrate (aquarium) , chemical vapor deposition , composite material , deposition (geology) , thermal , metallurgy , coating , nanotechnology , ceramic , geology , paleontology , oceanography , physics , thermodynamics , sediment , meteorology
The electron‐beam physical vapor deposition (EB‐PVD) process provides distinctive coatings of a unique columnar microstructure for gas turbine components. Main advantage of this structure is superior tolerance against straining, erosion and thermoshock, thus giving it a major edge in lifetime. This paper outlines the interaction between chemical composition and microstructural evolution EB‐PVD zirconia‐based thermal barrier coatings (TBCs) and their respective lifetimes in cyclic burner rig and furnace tests. Customizing TBC microstructure by adjusting EB‐PVD processing parameters is emphasized. A structural zone diagram for PVD is modified by interconnecting the influence of substrate rotation with microstructural evolutions. Finally, some basic aspects of single source and dual source evaporation are compared.