ISSN: 0090-3973
Page Count: 7

Thermoelectric Differences Used for Metal Sorting

Stuart, CM
Vice-PresidentMember of ASTM,Technicorp,NJ,

Abstract

Thermoelectric or Seebeck effect devices are beginning to see wide-spread use in metal and alloy sorting and verification processes, prompting the recent approval of ASTM Practice for Thermo-electric Sorting of Electrically Conductive Materials (E 977). This paper briefly explores the history of its use and discusses the theory of the method, while focusing deeper attention on practical applications of the devices and areas of its limitations. Testing requirements, specific material separations and examples, variables, advantages, disadvantages, and traceability are highlighted.

Keywords:
alloy, conductivity, crystalline structure, crystal lattice, electrode, electromotive force, electronic circuit, junction, Monel, non-destructive, Peltier effect, physical properties, probe, qualitative analysis, resistivity, Seebeck Effect, sorting, surface properties, temperature, thermocouple, thermoelectric, ther mopower, Thompson effect

Paper ID: JTE11013J
DOI: 10.1520/JTE11013J
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