Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
P-type bismuth telluride-based thermoelectric material and macro preparation method thereof
The invention discloses a p-type bismuth telluride-based thermoelectric material and a macro preparation method thereof, and relates to the technical field of thermoelectric materials, and the preparation method comprises the steps: 1, respectively weighing Bi, Zn, Sb and Te according to the stoichiometric ratio of the p-type bismuth telluride-based thermoelectric material; 2, the weighed materials are put into a quartz tube to be smelted, and a smelted material ingot is obtained; step 3, performing ball milling on the smelted material ingot by using a ball mill; and 4, putting the ball-milled powder into a graphite mold, and carrying out spark plasma sintering to obtain the p-type bismuth telluride-based thermoelectric material. Sintering is carried out by adopting a discharge plasma SPS technology, a compact thermoelectric material can be sintered in a short time, the time cost is saved, the thermoelectric performance of the sintered finished product is comparable with that of hot pressing sintering, and the quality of a single finished product can reach up to 1000g. The method can effectively improve the production efficiency and save the energy consumption.
本申请公开了一种p型碲化铋基热电材料及其宏量制备方法，本申请涉及热电材料技术领域，其制备方法包括：步骤一，按照p型碲化铋基热电材料的化学计量比，分别称量Bi、Zn、Sb和Te；步骤二，将称量后的材料放入石英管中进行熔炼，得到熔炼后的材料锭；步骤三，将熔炼后的材料锭用球磨机进行球磨；步骤四，将球磨后的粉末放入石墨模具，并进行放电等离子体烧结，得到p型碲化铋基热电材料。本申请采用放电等离子体SPS技术进行烧结，可以短时间烧结出致密的热电材料，节省时间成本，所烧结的成品的热电性能媲美热压烧结，单块成品质量可高达1000g。该方法可以有效提高生产效率，节省能耗。
P-type bismuth telluride-based thermoelectric material and macro preparation method thereof
The invention discloses a p-type bismuth telluride-based thermoelectric material and a macro preparation method thereof, and relates to the technical field of thermoelectric materials, and the preparation method comprises the steps: 1, respectively weighing Bi, Zn, Sb and Te according to the stoichiometric ratio of the p-type bismuth telluride-based thermoelectric material; 2, the weighed materials are put into a quartz tube to be smelted, and a smelted material ingot is obtained; step 3, performing ball milling on the smelted material ingot by using a ball mill; and 4, putting the ball-milled powder into a graphite mold, and carrying out spark plasma sintering to obtain the p-type bismuth telluride-based thermoelectric material. Sintering is carried out by adopting a discharge plasma SPS technology, a compact thermoelectric material can be sintered in a short time, the time cost is saved, the thermoelectric performance of the sintered finished product is comparable with that of hot pressing sintering, and the quality of a single finished product can reach up to 1000g. The method can effectively improve the production efficiency and save the energy consumption.
本申请公开了一种p型碲化铋基热电材料及其宏量制备方法，本申请涉及热电材料技术领域，其制备方法包括：步骤一，按照p型碲化铋基热电材料的化学计量比，分别称量Bi、Zn、Sb和Te；步骤二，将称量后的材料放入石英管中进行熔炼，得到熔炼后的材料锭；步骤三，将熔炼后的材料锭用球磨机进行球磨；步骤四，将球磨后的粉末放入石墨模具，并进行放电等离子体烧结，得到p型碲化铋基热电材料。本申请采用放电等离子体SPS技术进行烧结，可以短时间烧结出致密的热电材料，节省时间成本，所烧结的成品的热电性能媲美热压烧结，单块成品质量可高达1000g。该方法可以有效提高生产效率，节省能耗。
P-type bismuth telluride-based thermoelectric material and macro preparation method thereof
p型碲化铋基热电材料及其宏量制备方法
LIU FUSHENG (Autor:in) / CHEN WANGEN (Autor:in) / CHEN PEIHUI (Autor:in) / HU LIPENG (Autor:in) / ZHANG CHAOHUA (Autor:in) / AO WEIQIN (Autor:in)
11.10.2024
Patent
Elektronische Ressource
Chinesisch
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