Preparation of Zirconia Coatings by Hydrolysis of Zirconium Alkoxide with Hydrogen Peroxide

Coatings of 8.8‐mol%‐yttria‐doped zirconia were fabricated using a transparent and spinnable sol prepared by hydrolysis of zirconium alkoxide with hydrogen peroxide and nitric acid. The sol gave a crack‐free coating film consisting of fine grains. The crystalline phase was cubic after heating at 100...

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Veröffentlicht in:Journal of the American Ceramic Society 1993-04, Vol.76 (4), p.1061-1064
Hauptverfasser: Sakurai, Chihiro, Fukui, Toshimi, Okuyama, Masahiko
Format: Artikel
Sprache:eng
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Zusammenfassung:Coatings of 8.8‐mol%‐yttria‐doped zirconia were fabricated using a transparent and spinnable sol prepared by hydrolysis of zirconium alkoxide with hydrogen peroxide and nitric acid. The sol gave a crack‐free coating film consisting of fine grains. The crystalline phase was cubic after heating at 1000° and 1200°C and cubic and tetragonal at 1350°C, with the coating being highly oriented in the (111) plane, especially at 1000°C. Activation energy of the coating films was higher than that of the bulk. Transmittance through a film thickness of about 0.3 μm on each side was 75%.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1993.tb05337.x