Sol-gel synthesis of zirconia barrier coatings

A method for applying zirconia barrier coatings using a sol--gel method is described. The coatings of 8 wt.% yttria-stabilized zirconia are applied by spin coating a solution containing zirconium alkoxides and yttrium acetate onto 446 stainless steel substrates. Crystallization of the films was obse...

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Bibliographic Details
Published in:Journal of materials science 1990-03, Vol.25 (3), p.1537-1544
Main Authors: SHANE, M, MECARTNEY, M. L
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Exact sciences and technology
Technical ceramics
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Summary:A method for applying zirconia barrier coatings using a sol--gel method is described. The coatings of 8 wt.% yttria-stabilized zirconia are applied by spin coating a solution containing zirconium alkoxides and yttrium acetate onto 446 stainless steel substrates. Crystallization of the films was observed for thermal treatments in the range 750-1050 deg C. Excellent adhesion at the interface, due to significant coating/substrate interfacial reactions, indicates that this sol--gel route is a feasible method for applying zirconia coatings on superalloy airfoils. Photomicrographs, Diffraction patterns. 8 ref.--AA
ISSN:0022-2461
1573-4803
DOI:10.1007/BF01045347