Dynamics of Grain Boundary Network in Ceramics Superplasticity
نویسندگان
چکیده
منابع مشابه
Grain boundary segregation in oxide ceramics
D PR O Abstract The factors which control grain boundary segregation in oxide ceramics are reviewed. These include grain boundary energy, cation–cation interactions, impurity cation size, as well as electrostatic interactions with the grain boundary space charge. In addition, an approach for measuring grain boundary segregation in those materials, as a function of the five macroscopic parameter...
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A~~act-Semi~uantitative Auger Electron Spectroscopy (AES) on pure monophasic (Z~*)~.~(YO,.~~,,, was used to determine the chemical composition of the grain boundaries. Grain boundary enrichment with Y was observed with an enrichment factor of about 1.5. The difference in activation energy of the ionic conductivity of the grain boundary compared with the bulk can be explained by the Y segregatio...
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ژورنال
عنوان ژورنال: Journal of the Ceramic Society of Japan
سال: 2004
ISSN: 0914-5400,1882-1022
DOI: 10.2109/jcersj.112.472