| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
Precise X-ray diffraction experiments were performed under ultra-high-temperature up to 4000 K using a laser heating, gas flotation atmosphere control, angle dispersive X-ray diffraction apparatus and high-energy synchrotron X-ray with the high penetrating power. We have developed a system to reduce the effect of grain growth by two-dimensional IP device detector. The diffraction data is obtained without contamination of impurities. We tried to improve the measurement accuracy of the radiation thermometers. Precise measurements were carried out for HfO2, ZrO2 baddeleyite and ZrSiO4 zircon which belong to the high-melting-point materials. Temperature measurements of radiation thermometers and X-ray depth variable diffraction experiments were performed simultaneously. ZrSiO4 zircon and ZrO2 baddeleyite are the Earth's oldest-known minerals. The phase diagram in the ZrO2-SiO2 system was proposed by re-examination of phase relationship and chemical analyses.
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