METHODS OF PURIFICATION OF METALS AND INTERMETALLIC COMPOUNDS
Abstract
A study was made of impurity transport in thermal gradients and other fields in materials potentially useful for thermoelectric, thermionic or photovoltaic power generation at high temperatures. The general problem of impurity distributions in an intense thermal gradient was considered. The physical and chemical properties of SiC were considered in the context of diffusion phenomena and thermoelectric behavior at elevated temperatures. Single crystals and polycrystalline rods of SiC were studied. Both chemical and spectrographic analyses were used for the qualitative and quantitative estimation of impurity content. Electrical resistivity and thermoelectric power measurements were made up to 1000 C. Polycrystalline SiC rods were subjected to intense thermal gradients by direct inductive coupling at 5 mc. Impurity redistribution is followed by spectrographic analysis. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1961
- Accession Number
- AD0267777
Entities
People
- Sherman Susman
Organizations
- IIT Research Institute