Premium
Thermal Stability and Ionic Conductivity of Calcia‐Stabilized Zirconia with Alumina Addition
Author(s) -
Kim Buyoung,
Ryu Jiseung,
Jeon Seol,
Jo Seunghyeon,
Lee Heesoo,
Shin MinChul
Publication year - 2016
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12539
Subject(s) - thermal diffusivity , materials science , cubic zirconia , ionic conductivity , thermal stability , phase (matter) , monoclinic crystal system , thermal expansion , ionic bonding , thermal conductivity , analytical chemistry (journal) , chemical engineering , composite material , ion , thermodynamics , crystallography , chemistry , ceramic , crystal structure , chromatography , electrolyte , organic chemistry , physics , electrode , engineering
The thermal expansion and ionic conduction of 15 mol% CaO‐stabilized zirconia ( CSZ ) with added Al 2 O 3 were investigated. Specimens with 0.5 and 1 mol% Al 2 O 3 maintained the cubic phase, and the thermal diffusivity increased from 0.499 to 0.661 mm 2 /s with a 1 mol% addition. The addition of 5 mol% caused a decrease in the thermal diffusivity (0.609 mm 2 /s) with the formation of the monoclinic phase. The thermal expansion coefficient of the CSZ decreased, and the thermal diffusivity increased with the addition of Al 2 O 3 . The ionic conductivity was increased up to the addition of 1 mol% due to scavenging of siliceous by Al 2 O 3 , while the 5 mol% addition showed a decrease in conductivity with the formation of the intergranular phase.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom