P-type thermoelectric material

Details P-type thermoelectric material P-type thermoelectric material

1994-02-23

1996-01-16

Walsh, Donald P.

Batteries: thermoelectric and photoelectric

Thermoelectric

Having particular thermoelectric composition

136201, 136238, 136239, 419 29, 419 45, 419 46, 419 53, H01L 3514

Patent

active

054844908

ABSTRACT:
A P-type thermoelectric material consists essentially of iron disilicide, metallic manganese and metallic aluminium dissolved in or alloyed with the iron disilicide, and silicon oxide and/or aluminum oxide present in the iron disilicide. The manganese is contained in an amount of from 1.67 to 4.1 atomic % with respect to a sum of atoms of iron and silicon constituting the iron disilicide, the metallic manganese and the metallic aluminum taken as 100 atomic %, and the metallic aluminum contained in an amount of from 1.33 to 3.33 atomic % with respect thereto, and a sum of the metallic manganese and the metallic aluminum in an amount of from 4.0 to 5.34 atomic % with respect thereto. The P-type thermoelectric material having such a composition produces a thermoelectromotive force equal to or greater than those of the conventional P-type thermoelectric materials comprised of iron disilicide, and it exhibits a mean resistivity equal to or smaller than that of the N-type thermoelectric material. Hence, a thermocouple including the P-type thermoelectric material and the N-type thermoelectric material can be remarkably enhanced in the performance as a whole.

REFERENCES:
patent: 2988806 (1961-06-01), Adams et al.
patent: 3182391 (1965-05-01), Charland et al.
patent: 4275259 (1981-06-01), Yamamoto et al.
patent: 4589918 (1986-05-01), Nishida et al.
patent: 5009717 (1991-04-01), Komabayashi et al.
patent: 5057161 (1991-10-01), Komabayashi et al.
patent: 5069868 (1991-12-01), Tokia et al.
patent: 5252119 (1993-10-01), Nishida et al.

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