Title:
ｎ−型Ｍｇ−Ｓｂ基室温熱電材料及びその製造方法
Document Type and Number:
Japanese Patent JP6976012
Kind Code:
B2
Abstract:
An n-type Mg-Sb-based room temperature thermoelectric material and a preparation method therefor. The chemical general formula of the thermoelectric material is Mg3+ δMnxSb2‑y‑zBiyAz, wherein A represents an oxygen family element such as S, Se or Te, -0.2≤δ≤0.3; x, y, and z represent atomic ratios, x=0.001-0.4, y=0-1.0, and z=0-0.2. The preparation method comprises: selecting elemental materials having a purity greater than or equal to 99% as raw materials according to the chemical general formula, proportioning and weighing the raw materials separately in argon atmosphere, then putting the raw materials in a ball mill, and adding stainless steel balls into the ball mill, thereby obtaining powder after the ball mill rotates at high speed; and weighing the powder separately and then putting same in a graphite mold, placing the mold in a high-temperature furnace, vacuumizing, performing sintering under the condition that the total pressure is less than 4Pa, and cooling to room temperature after the sintering. The thermoelectric material has higher room temperature thermoelectric figure of merit and better mechanical properties than conventional n-type bismuth telluride, and has low costs. The preparation method is easy to operate and low in costs, and the material prepared thereby has high controllability and good repeatability.
Inventors:
Liu Weish
Shreway
Handija
Ju Young Bin
Phone Cedar
Jan Shun Mon
Li Young
Shreway
Handija
Ju Young Bin
Phone Cedar
Jan Shun Mon
Li Young
Application Number:
JP2020547072A
Publication Date:
December 01, 2021
Filing Date:
January 25, 2019
Export Citation:
Assignee:
Southern University of Science and Technology
International Classes:
H01L35/34; B22F1/00; B22F9/04; C22C12/00; C22C23/00; H01L35/18
Domestic Patent References:
| JP2016072594A | ||||
| JP2016529699A | ||||
| JP2007324500A | ||||
| JP2013138166A | ||||
| JP11152503A | ||||
| JP2007116156A |
Foreign References:
| WO2017072982A1 |
Attorney, Agent or Firm:
Kaji/Suhara Patent Office