Method for rapidly preparing CaMg2Bi2 thermoelectric material

The invention discloses a method for rapidly preparing a CaMg2Bi2 thermoelectric material, which comprises the following steps of: in an environment filled with rare gas Ar, weighing various high-purity raw material particles or raw material powder according to the stoichiometric ratio of a synthesi...

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Bibliographic Details
Main Authors WANG GUOYU, HUO YUFENG
Format Patent
LanguageChinese
English
Published 12.09.2023
Subjects
ALLOYS
CASTING
CHEMISTRY
ELECTRICITY
FERROUS OR NON-FERROUS ALLOYS
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
METALLURGY
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
WORKING METALLIC POWDER
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Summary:The invention discloses a method for rapidly preparing a CaMg2Bi2 thermoelectric material, which comprises the following steps of: in an environment filled with rare gas Ar, weighing various high-purity raw material particles or raw material powder according to the stoichiometric ratio of a synthesized target compound, sequentially filling a graphite mold according to a sequence from a high melting point to a low melting point, and sealing; the method comprises the following steps: rapidly placing a graphite mold filled with various high-purity raw material particles or raw material powder in a reaction environment of continuously-vacuumized SPS equipment, sintering the raw materials when the vacuum degree of the reaction environment reaches below 10Pa, and adjusting a sintering procedure according to the melting point and the reaction temperature of a synthesized target compound. According to the invention, time can be saved, synthesis time is greatly shortened, and volatilization of Mg is reduced; and Mg an
Bibliography:Application Number: CN202210195279