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Pressureless sintered 3Y-TZP/20%Al2O3 composite ceramic

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Abstract

Nanometer 3Y-TZP/20%Al2O3 (mass fraction) composite powders prepared by the chemical coprecipitation method were pressureless sintered at 1550 °C for 2 h. Effects of calcining temperatures at 800 °C, 1 000 °C, and 1 200 °C on phase structure, relative density, and Vicker’s hardness of the sintered bodies were studied. The results show that 1 000 °C was the optimal calcining temperature, and the powder calcined was composed of tetragonal zirconia with the Scherrer crystalline size of 6.3nm. The relative density was up to 98.5% under pressureless sintering, and the sintered body was t-ZrO2 (without m-ZrO2)+α-Al2O3 with the average size of 0.4 µm.

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Authors and Affiliations

  1. State Key Laboratory for Powder Metallurgy, Central South University of Technology, 410083, Changsha, China

    Yin Bang-yao, Wang Ling-sen, Lin Jian-liang, Zhang Jing-shen & Fan Yi

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  1. Yin Bang-yao
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  2. Wang Ling-sen
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  3. Lin Jian-liang
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  4. Zhang Jing-shen
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  5. Fan Yi
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Additional information

Foundation item: State Key Laboratory for Powder Metallurgy(No.9706-36)

Biography of the first author: YIN Bang-yao, born in 1966, majoring in advanced ceramic materials.

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Yin, By., Wang, Ls., Lin, Jl. et al. Pressureless sintered 3Y-TZP/20%Al2O3 composite ceramic. J Cent. South Univ. Technol. 7, 12–14 (2000). https://doi.org/10.1007/s11771-000-0004-1

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  • DOI: https://doi.org/10.1007/s11771-000-0004-1

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