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Changes in Aging Behavior and Defect Structure of Yttria‐Fully‐Stabilized ZrO 2 with Sc 2 O 3 Doping
Author(s) -
Kondoh Junya,
Tomii Yoichi,
Kawachi Katsuhiro
Publication year - 2003
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2003.tb03615.x
Subject(s) - doping , materials science , conductivity , yttria stabilized zirconia , electrical resistivity and conductivity , electrochemistry , analytical chemistry (journal) , composite material , cubic zirconia , chemistry , ceramic , electrode , optoelectronics , electrical engineering , engineering , chromatography
Methods of suppressing decreased conductivity in 8 mol% Y 2 O 3 ‐stabilized–92 mol% ZrO 2 (8YSZ) with aging were investigated. Different amounts of Sc 2 O 3 were doped into 8YSZ. The electrochemical properties of Sc 2 O 3 ‐doped 8YSZ were measured, and the microstructural and local structural changes were characterized. The present results indicate that an appropriate amount of Sc 2 O 3 doping, 3 or 4 mol%, effectively suppresses decreased conductivity with aging in 8YSZ.