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Phase Mixture Models for the Properties of Nanoceramics

Autor Willi Pabst, Eva Gregorova
en Limba Engleză Paperback – 30 iun 2010
The properties of nanocrystalline ceramics are in many respects unique because the grain boundaries, which are in reality discontinuities of small but finite thickness, attain significant volume fractions when the average grain size is below approximately 100 nm. The simplest way to model the grain size dependence of properties consists in considering the nanocrystalline material as a two-phase composite, i.e. as a binary mixture of two separate phases, a crystalline core phase and a disordered, glass-like grain boundary phase. When this viewpoint is adopted, the laws of composite theory can be applied to estimate the effective properties. This book illustrates this method for single-phase ceramic systems with monodisperse grain size by invoking a unit-cell approach using cubic, tetrakaidecahedral and anisometric grain shapes.
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Specificații

ISBN-13: 9781616686734
ISBN-10: 1616686731
Pagini: 75
Ilustrații: tables & charts
Dimensiuni: 153 x 228 x 8 mm
Greutate: 0.15 kg
Editura: Nova Science Publishers Inc

Cuprins

Introduction; Phase Mixture Models & Micromechanical Bounds; Unit-Cell Geometries & Arrangement; Effective Young's Modulus of Isotropic Nanocrystalline Ceramics; Effective Thermal Conductivity of Isotropic Nanocrystalline ceramics; Effective Thermal Conductivity of Anisotropic Nanocrystalline Ceramics; Conclusion; Index.