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Preparation of fine-grained monoclinic zirconia ceramics by colloidal processing

Published online by Cambridge University Press:  31 January 2011

T. Uchikoshi ,
Y. Sakka ,
K. Ozawa  and
K. Hiraga
T. Uchikoshi
Affiliation:
National Research Institute for Metals, 1–2–1, Sengen, Tsukuba, Ibaraki 305, Japan
Y. Sakka
Affiliation:
National Research Institute for Metals, 1–2–1, Sengen, Tsukuba, Ibaraki 305, Japan
K. Ozawa
Affiliation:
National Research Institute for Metals, 1–2–1, Sengen, Tsukuba, Ibaraki 305, Japan
K. Hiraga
Affiliation:
National Research Institute for Metals, 1–2–1, Sengen, Tsukuba, Ibaraki 305, Japan
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Abstract

Fine-grained monoclinic zirconia ceramic was made from well-dispersed zirconia sol prepared by the hydrolysis of zirconium chloride oxide octahydrate. Dechlorinated and concentrated zirconia sol was consolidated by pressure filtration. The relative green density of the compact was improved by the following cold isostatic pressing treatment at 400 MPa. The compact was densified by pressureless sintering to >98% of theoretical density in air at 1100 °C, which is lower than that of monoclinic to tetragonal transformation of pure zirconia. The average grain size of the sintered monoclinic zirconia ceramics was 92 nm.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 4 , April 1998 , pp. 840 - 843
Copyright
Copyright © Materials Research Society 1998

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References

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