Abstract
Phase transitions which depend on grain size induce very interesting properties in materials such as zirconia or barium titanate. A new and rigorous thermodynamic treatment of this type of phase transition is proposed with consideration of the surface phenomena. An interpretation is given of the observed differences when the material—particularly BaTiO3—under consideration is a fine grain powder or is a fine grain ceramic.
Zusammenfassung
Korngrößenabhängige Phasenumwandlungen verursachen bei Materialien wie Zirkonerde oder Bariumtitanat sehr interessante Eigenschaften. Unter Berücksichtigung der Oberflächenerscheinungen wurde ein neue und gründliche thermodynamische Behandlung dieses Typs von Phasenumwandlungen vorgeschlagen. Es wird eine Erörterung der beobachteten Differenzen in Abhängigkeit davon angestellt, ab das untersuchte Material—hier BaTiO3—ein feingekörntes Pulver oder eine feingekörnte Keramik ist.
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In celebration of the 60th birthday of Dr. Andrew K. Galwey
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Perriat, P., Niepce, J.C. & Caboche, G. Thermodynamic considerations of the grain size dependency of material properties. Journal of Thermal Analysis 41, 635–649 (1994). https://doi.org/10.1007/BF02549339
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DOI: https://doi.org/10.1007/BF02549339