Title:
THERMOELECTRIC MATERIAL, ITS MANUFACTURING METHOD, AND THERMOELECTRIC GENERATION SYSTEM
Document Type and Number:
Japanese Patent JP3504121
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To manufacture a high-temperature thermoelectric material with a high efficiency by containing a metal matrix and a dispersion material being dispersed into the metal matrix and constituting the dispersion material with a substance that differs from the metal matrix.
SOLUTION: Ni oxide powder, Cu oxide powder, and aluminum oxide powder are weighed so that a weight ratio is 1:1:0.3 and the mixed powder of a uniform dispersion is adjusted and then an n-type thermoelectric material 1 is manufactured by hot-press machining, thus obtaining a thermoelectromotive force of 18 mV at a temperature difference of 300°C as compared with a room temperature. Ni powder, Cr powder, and aluminum oxide powder are weighed so that a weight ratio is 9:1:0.42 and a raw material powder that is uniformly dispersed is adjusted and then a p-type thermoelectric material 2 is manufactured by hot-press machining, thus obtaining 9 mV thermoelectromotive force. The n-type thermoelectric material and the p-type thermoelectric material are used, thus manufacturing a thermoelectric element. 1.5 kW output for the matching load of the thermoelectric element is obtained in a temperature difference of 0 and 500°C, thus manufacturing a high-temperature thermoelectric material with a high efficiency.
Inventors:
Seiichi Suenaga
Hiroki Inagaki
Keizo Shimamura
Hiroki Inagaki
Keizo Shimamura
Application Number:
JP25085997A
Publication Date:
March 08, 2004
Filing Date:
September 16, 1997
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
B22F9/22; C22C1/05; C22C1/10; H01L35/22; H01L35/34; H02N11/00; (IPC1-7): H01L35/22; B22F9/22; C22C1/05; C22C1/10; H01L35/34; H02N11/00
Domestic Patent References:
| JP974229A | ||||
| JP6302866A |
Attorney, Agent or Firm:
Takehiko Suzue (6 outside)