초록

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Abstract ▼ AI-Helper

ATZ was prepared by adding an alumina sol equivalent to 2wt% as $Al_2O_3$ 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 $1450^{\circ}C{\sim}1550^{\circ}C$ for 2h. They s...

ATZ was prepared by adding an alumina sol equivalent to 2wt% as $Al_2O_3$ 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 $1450^{\circ}C{\sim}1550^{\circ}C$ for 2h. They showed excellent microstructure with alumina grains of <$0.5{\mu}m$ and>99% of the theoretical density. Fracture toughness of ${\sim}8MPa{\cdot}m^{1/2}$ was observed around 20ATZ which was higher than $6MPa{\cdot}m^{1/2}$ obtainable by ball-milling.

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