| Budget Amount *help |
¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
Fiscal Year 2016: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2015: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Fiscal Year 2014: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
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| Outline of Final Research Achievements |
In order to investigate the effects of directly applied current sintering on promotion of densification and reaction, synthesis of the thermoelectric Mg2Si sintered body was tried. The densification behaviour, Mg2Si phase formation and the power consumption during sintering and the relative density of the sample were compared to those of a sample sintered by the conventional PCS. When the powders were heated by directly applied current sintering, the densification became larger during heating and the density of a sintered body was also significantly higher as compared to the conventional PCS. Furthermore, directly applied current sintering is found to accelerate the reaction between Mg and Si to form Mg2Si phase. In the case of the thermoelectric β-FeSi2, the similar densification behavior and fine microstructure were obtained by this modified PCS process, indicating that this process is expected to be significantly beneficial for synthesis of thermoelectric materials.
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