THERMOELECTRIC MATERIAL AND ITS MANUFACTURING METHOD

PROBLEM TO BE SOLVED: To provide thermoelectric material having low thermal conductivity (κ) and high thermoelectric figure of merit (Z), and to provide its manufacturing method. SOLUTION: Raw material whose composition consists of at least one kind of elements selected from a group constituted of B...

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Bibliographic Details
Main Authors HAYASHI TAKAHIRO, HORIO YUUMA
Format Patent
LanguageEnglish
Published 19.08.2004
Edition7
Subjects
ALLOYS
CHEMISTRY
ELECTRICITY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:PROBLEM TO BE SOLVED: To provide thermoelectric material having low thermal conductivity (κ) and high thermoelectric figure of merit (Z), and to provide its manufacturing method. SOLUTION: Raw material whose composition consists of at least one kind of elements selected from a group constituted of Bi and Sb, at least one kind of elements selected from a group constituted of Te and Se, and at least one kind of elements selected from a group constituted of Ge, Si, Sn, Ga and Pb is dissolved and solidified and ingot is obtained. The ingot is made into thin strips or in the form of foil powder profile with melt quenching method. Further, the thin strips or the foil type powder is heat-treated in a reducing gas atmosphere or inert gas atmosphere. After that, the thin strips or foil type powder are caked, and the thermoelectric material is obtained. COPYRIGHT: (C)2004,JPO&NCIPI
Bibliography:Application Number: JP20030019572