Accession Number:

AD0259101

Title:

THERMOELECTRIC MATERIALS

Descriptive Note:

Corporate Author:

STANFORD RESEARCH INST MENLO PARK CALIF

Personal Author(s):

Report Date:

1961-02-28

Pagination or Media Count:

1.0

Abstract:

Several compositions of the Cu2S-Cu2Te system were examined in both the liquid and solid states. Seebeck coefficient and resistivity measurements were made on samples containing 25, 50, and 75 Cu2Te. The Seebeck coefficient showed a peak at the solidification point in the 50-50 composition which corresponds to one observed in Cu2S. The 25 and 75 Cu2S compositions did not show this peak in the Seebeck coefficient. Resistivity of all the compositions was characterized by a relatively constant value in the liquid and a decreased value as solidification began. This decrease was quite sharp in the 50-50 mixture in the region of 910-950 C. Adding Cu2Te to Cu2S resulted in lowering the resistivity and the Seebeck coefficient of the sulfide however, some improvement was noted in the thermoelectric parameters. Data were obtained on the thermal conductivity of Cu2S up to 950 C by using the Peltier method. The thermal conductivity in the liquid state is to be determined by using the comparison method with fused quartz as the reference material.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE