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Jo, Wook
Sustainable Functional Ceramics Lab
Research Interests
  • Lead-free piezoceramics, ultra - low temperature sintering, ferroelectrics, relaxor ferroelectrics, 2D materials, magnetoelectric materials, multiferroics

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Effect of Crystal Shape on the Grain Growth during Liquid Phase Sintering of Ceramics

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Title
Effect of Crystal Shape on the Grain Growth during Liquid Phase Sintering of Ceramics
Author
Jo, WookHwang, Nong-MoonKim, DOH-YEON
Keywords
Liquid phase sintering; Grain growth; Crystal shape; Surface free energy; Interface structure
Issue Date
200611
Publisher
Korean Ceramic Society
Citation
JOURNAL OF THE KOREAN CERAMIC SOCIETY, v.43, no.11, pp.728 - 733
Abstract
he equilibrium or growth shape of ceramic materials is classified largely into two categories according to the thermodynamic conditions imposed. One is a polyhedral shape where the surface free energy is anisotropic, and the other a spherical shape where the surface free energy is isotropic. In the case of grains with a polyhedral shape of anisotropic surface free energy, so- called abnormal grain growth usually takes place due to a significant energy barrier for a growth unit to be attached to the crystal surface. In the case of grains with a spherical shape of isotropic surface free energy, however, normal grain growth with a uniform size distribution takes place. In this contribution, the state-of-the-art of our current understanding of the relationship between the crystal shape and the microstructure evolution during the sintering of ceramic materials in the presence of a liquid phase was discussed.
URI
http://scholarworks.unist.ac.kr/handle/201301/7656
ISSN
1229-7801
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