POWER-DENSE THERMOELECTRIC MODULE. PHASE IV. SOLIDIFICATION OF THERMOELECTRIC MATERIALS UNDER THE INFLUENCE OF ULTRASONIC AGITATION.
Abstract
The compressive strength of N-type PbTe has been related to the grain diameter, D. Extrapolation of the experimental data to infinite grain diameter yields a fracture strength of 5000 psi for single crystal PbTe. The ultrasonic technique employed for the preparation of N-type PbTe was applied to the solid solution system, PbTe-SnTe (70-30). The average room temperature resistivity of all the prepared ingots fell in the range of 2-4 x 10 to the minus four ohmscm. The average Seebeck coefficient (in the temperature range of 0-500 = 145 microvolt 1 degrees C). Extensive improvement was obtained in the over-all structure of the P-type ingots. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1963
- Accession Number
- AD0431558
Entities
People
- A. I. Mlavsky
- Martin Weinstein