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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

Preparation of Sintered ATZ by Sol-Gel Process and Properties

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1993, v.6 no.2, pp.225-229
Han, Kyoung Ran
Park, Sun Jin
Hong, Kug-Sun
Jun, Hyung Woo
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Abstract

ATZ was prepared by adding an alumina sol equivalent to 2wt% as <TEX>$Al_2O_3$</TEX> to an aqueous slurry of alumina (AKP-30) and zirconia (TZ-2Y or TZ-0Y) in the range of 10-30ATZ, followed by gelation, calcination, and sintereing between <TEX>$1450^{\circ}C{\sim}1550^{\circ}C$</TEX> for 2h. They showed excellent microstructure with alumina grains of <<TEX>$0.5{\mu}m$</TEX> and>99% of the theoretical density. Fracture toughness of <TEX>${\sim}8MPa{\cdot}m^{1/2}$</TEX> was observed around 20ATZ which was higher than <TEX>$6MPa{\cdot}m^{1/2}$</TEX> obtainable by ball-milling.

keywords
ATZ, sol-gel, alumina coating


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