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Lanthanum–Cerium Oxide as a Thermal Barrier‐Coating Material for High‐Temperature Applications
Author(s) -
Cao X.,
Vassen R.,
Fischer W.,
Tietz F.,
Jungen W.,
Stöver D.
Publication year - 2003
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200304132
Subject(s) - materials science , thermal barrier coating , thermal expansion , yttria stabilized zirconia , temperature cycling , coating , thermal conductivity , lanthanum , cerium , oxide , composite material , cubic zirconia , annealing (glass) , thermal , ceramic , metallurgy , inorganic chemistry , chemistry , physics , meteorology
La 2 Ce 2 O 7 is proposed as a new material for thermal barrier coating that has a higher thermal expansion coefficient and a lower thermal conductivity than traditional coating materials. After long‐term annealing at 1400 °C, the crystal structure of La 2 Ce 2 O 7 was maintained (see Figure). Below 300 °C, thermal contraction occurs, and the material has a comparable thermal cycling life to yttria‐stabilized zirconia coatings.