Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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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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