Publication Date:
2016-06-05
Description:
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.
Print ISSN:
1546-542X
Electronic ISSN:
1744-7402
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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