Scandia, yttria-stabilized zirconia for ultra-high temperature t

Details Scandia, yttria-stabilized zirconia for ultra-high temperature t Scandia, yttria-stabilized zirconia for ultra-high temperature t

1996-10-31

1998-07-14

Turner, Archene

Stock material or miscellaneous articles

Composite

Of inorganic material

428699, 428701, 428702, F01D 1108

Patent

active

057801789

ABSTRACT:
A composite structure includes a self-supporting substrate and a thermal barrier coating of zirconia stabilized with scandia and yttria. A method of protecting the surface of a self-supporting substrate from degradation caused by exposure to temperatures above 1200.degree. C. includes the step of applying to the surface a coating of zirconia stabilized with scandia and yttria.

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Ciacchi et al "The System Y.sub.2 O.sub.3 -Sc.sub.2 O.sub.3 -ZrO.sub.2 : se Characterization by XRD, TEM and Optical Microscopy" J. Europ. Cer. Soc. 7 (1991), 185-195.
Terauchi et al, "High Ionic Conductivity and High Fracture Strength of Cubic Zirconia (Y.sub.0.16-x Sc.sub.x)Zr.sub.0.84 O.sub.1.92 /Alumina Composites" Material Letters 23 (1995) 273-275.
Ciacchi et al, "The System Y.sub.2 O.sub.3 -Sc.sub.2 O.sub.3 -ZrO.sub.2 : Phase Stability and Ionic Characterization" J. Europ. Cer Soc. 7 (1991), 196-205.

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