Scandia-and-Yttria-stabilized zirconia for thermal barriers
Abstract: Zirconia stabilized with both scandia
and yttria in suitable proportions has shown promise of being a superior thermal-barrier
coating material, relative to zirconia stabilized with yttria only. They have been found
to afford increased resistance to deleterious phase transformations at temperatures high
enough to cause deteriortaion of yttria-strabilized zirconia.
Recently Scandia was identified as a stabilizer that could be used instead of, or in
addition to, ytttria. Of particular interest are Scandia-and-yttria-stabilized zirconia
compositions of about 6 mole percent Scandia and 1 mole percent yttria.
For additional information please visit: <http://www.nasatech.com/TSP2/incatvr2.php?cat=Materials&Vol=2003>
Comment: Stabilized zirconia powders are available from Reade
Advanced Materials as a custom processor and global distributor.
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