MAGNESIUM-SILICON COMPOSITE MATERIAL AND PROCESS FOR PRODUCING SAME, AND THERMOELECTRIC CONVERSION MATERIAL, THERMOELECTRIC CONVERSION ELEMENT, AND THERMOELECTRIC CONVERSION MODULE EACH COMPRISING OR INCLUDING THE COMPOSITE MATERIAL

摘要

Provided is a magnesium-silicon composite material which contains Mg 2 Si as an intermetallic compound imposing no burden on the environment, is suitable for use as a material for thermoelectric conversion modules, and has excellent thermoelectric conversion performance. The magnesium-silicon composite material has a dimensionless figure-of-merit parameter at 866K of 0.665 or larger. This magnesium-silicon composite material can have high thermoelectric conversion performance when used in, for example, a thermoelectric conversion module.