METAL MATERIAL HAVING n-TYPE THERMOELECTRIC CONVERSION PERFORMANCE

• Main Author: FUNAHASHI RYOJI
• Format: Patent
• Language: English
• Published: 13.08.2015
• Subjects: AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; ALLOYS; APPARATUS THEREFOR; CHEMISTRY; CRYSTAL GROWTH; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; REFINING BY ZONE-MELTING OF MATERIAL; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; SINGLE-CRYSTAL-GROWTH; TREATMENT OF ALLOYS OR NON-FERROUS METALS; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL

The present invention provides a metal material represented by compositional formula MnxMySimAln wherein M is at least one element selected from the group consisting of Ti, V, Cr, Fe, Co, Ni, and Cu; and 2.0 x 3.5, 0 y 1.4, 2.5 x+y 3.5, 3.5 m 4.5, and 1.5 n 2.49, the metal material having a negative Seebeck coefficient and an electrical resistivity of 2 m ·cm or less at a temperature of 25° C. or more, the metal material being in a crystalline form. The present invention provides a novel material useful as an n-type thermoelectric conversion material exhibiting favorable thermoelectric conversion performance in the intermediate temperature range and excellent durability.