Hidehiro Yoshida Professor
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+81-3-5841-8642 |
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+81-3-5841-8653 |
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hyoshida[at]material.t.u-tokyo.ac.jp
* In your correspondence, please replace [at] with "@" in the above email address. |
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http://www.ceramic.t.u-tokyo.ac.jp/ |
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structural ceramics, high temperature creep, superplasticity, flash sintering, grain boundary |
Research
The mechanical properties of structural ceramics and composites are governed by the atomic configuration and chemical composition at the grain boundaries and interfaces. In addition, our research has revealed that the high temperature mass transport phenomenon that determines the heat resistance and plasticity of ceramics is significantly influenced by externally applied electro-magnetic fields. Our laboratory aims to develop unique mechanical properties in structural ceramics by means of controlling grain boundary structures and to develop new structural ceramics based on understanding of deformation / fracture mechanisms and interatomic interaction. Recent research topics are as follows.
a) High temperature deformation in grain boundary controlled ceramics
b) Superplastic forming of ceramics under applied strong electric fields
c) Defect structure and mass transport phenomena of ceramics under strong electric fields
d) Improvement of mechanical properties of ceramics using unique anisotropic texture
主要研究論文
H. Masuda, K. Morita, T. Ohmura, “Nanoindentation-induced plasticity in cubic zirconia up to 500ºC,” Acta Mater., 184 (2020) 59-68.
H. Yoshida and Y. Sasaki, “Low temperature and high strain rate superplastic flow in structural ceramics induced by strong electric-field”, Scripta Mater., 146 (2018) 173-177.
H. Yoshida, P. Biswas, R. Johnson and M. K. Mohan, “Flash-sintering of Magnesium Aluminate Spinel (MgAl2O4) Ceramics,” J. Am. Ceram. Soc., 100 (2017) 554-562.
H. Yoshida, K. Morita, B.-N. Kim, Y. Sakka and T. Yamamoto, “Reduction in sintering temperature for flash-sintering of yttria by nickel cation-doping,” Acta Mater., 106 (2016) 344-352.