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Magnesium-based thermoelectric conversion material, magnesium-based thermoelectric conversion element, and method for producing magnesium-based thermoelectric conversion material
A magnesium-based thermoelectric conversion material made of a sintered compact of a magnesium compound, in which, in a cross section of the sintered compact, a Si-rich metallic phase having a higher Si concentration than in magnesium compound grains is unevenly distributed in a crystal grain boundary between the magnesium compound grains, an area ratio of the Si-rich metallic phase is in a range of 2.5% or more and 10% or less, and a number density of the Si-rich metallic phase having an area of 1 μm2 or more is in a range of 1,800/mm2 or more and 14,000/mm2 or less.
Magnesium-based thermoelectric conversion material, magnesium-based thermoelectric conversion element, and method for producing magnesium-based thermoelectric conversion material
A magnesium-based thermoelectric conversion material made of a sintered compact of a magnesium compound, in which, in a cross section of the sintered compact, a Si-rich metallic phase having a higher Si concentration than in magnesium compound grains is unevenly distributed in a crystal grain boundary between the magnesium compound grains, an area ratio of the Si-rich metallic phase is in a range of 2.5% or more and 10% or less, and a number density of the Si-rich metallic phase having an area of 1 μm2 or more is in a range of 1,800/mm2 or more and 14,000/mm2 or less.
Magnesium-based thermoelectric conversion material, magnesium-based thermoelectric conversion element, and method for producing magnesium-based thermoelectric conversion material
NAKADA YOSHINOBU (Autor:in)
04.10.2022
Patent
Elektronische Ressource
Englisch
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