POWER DEFENSE THERMOELECTRIC MODULE

Abstract

Efforts concerned optimizing the power-to-weight ratio of a lead telluride thermoelectric generator by developing bonding techniques and material preparation processes. A technique which utilizes a SnTe braze, was developed for bonding P and N-type PbTe to pure Fe electrodes. Contact resistances fall in the range of 5 - 15 micro-ohm per sq. cm. A bonding technique involving the interdiffusion of Fe and N-type PbTe at 850 C was developed. Contact resistances fall in the range 10 - 20 micro ohm per sq. cm. N-type PbTe directionally solidified under the influence of ultrasonic oscillations was found to possess mechanical properties superior to presently available material. Bonded and unbonded PbTe were found to be capable of sustaining, without any visible damage, a temperature gradient of 510 C for over 250 hours.

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Document Details

Document Type
Technical Report
Publication Date
Nov 02, 1962
Accession Number
AD0404193

Entities

People

  • Martin Weinstein

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Composite Materials
  • Compressive Strength
  • Construction
  • Crystal Structure
  • Crystals
  • Electrical Properties
  • Grain Size
  • Heat Energy
  • Heat Treatment
  • High Temperature
  • Hot Pressing
  • Lead Tellurides
  • Manufacturing
  • Materials
  • Mechanical Properties
  • Melting Point
  • Temperature Gradients

Fields of Study

  • Materials science

Readers

  • Electrical Engineering
  • Materials Science and Engineering.
  • Structural Health Monitoring of Composite Structures.