2020 Fiscal Year Final Research Report
Strengthening of alumina-strengthened porcelain made of Amakusa clay
Project/Area Number |
18K04753
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 26040:Structural materials and functional materials-related
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Research Institution | Saga University |
Principal Investigator |
AKATSU Takashi 佐賀大学, 芸術地域デザイン学部, 教授 (40231807)
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Project Period (FY) |
2018-04-01 – 2021-03-31
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Keywords | 磁器 / アルミナ / 強度 / 応力 / 亀裂発生 / 焼成変形 |
Outline of Final Research Achievements |
We have revealed that strengthening of alumina strengthened porcelain is owing to, 1: Compressive prestress on porcelain matrix, and 2: Prevention of microcracking around quartz grains due to the addition of alumina particles with large thermal expansion coefficient. The validity of the prestress estimated with micromechanics calculation is confirmed by the prestress measurement with raman scattering spectroscopy. In the case of other porcelain containing alumina particles, the strength of porcelain is basically controlled by the amount of residual alumina particles in fired porcelain.
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Free Research Field |
セラミックス
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Academic Significance and Societal Importance of the Research Achievements |
アルミナ強化磁器の強化メカニズムを明らかにしたことにより、その強化メカニズムに基づいて新たな強化磁器を材料設計することが可能となった。
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