Abstract
A new method, Hydrothermal Oxidation Method, has been developed to prepare fine grained zirconia powders. Under 100 MPa, Zr metal and H2O sealed in the capsule reacted above 250°C and yielded fine grained ZrO2 powders. The powders were sole monoclinic modification having the average grain size of ≈2k nm. The use of Ca solutions instead of H2O led to a partiale formation of cubic zirconia fine grains, particularly in the case of Ca(NO3)2 with excess an amount of Zr and at high temperatures, 700°C. The cubic zirconia seemed to be stabilized both by calcium and by nitrogen.
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© 1989 Elsevier Science Publishers LTD
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Yoshimura, M., Kikugawa, S., Sōmiya, S. (1989). Preparation of Zirconia Fine Powders by the Reactions Between Zirconium Metal and High Temperature—High Pressure Solutions. In: Sōmiya, S. (eds) Hydrothermal Reactions for Materials Science and Engineering. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0743-0_10
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DOI: https://doi.org/10.1007/978-94-009-0743-0_10
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-6819-2
Online ISBN: 978-94-009-0743-0
eBook Packages: Springer Book Archive