THE PREPARATION OF HIGH PURITY RARE EARTH METALS BY ZONE REFINING
Abstract
Ultra high purity rare earth metals, Samarium, Europium, Gadolinium with total impurities of less than .1 ppm were attempted. Methods of separation, reduction and purification were: ion exchange, dry fluoride preparation, metallo thermiction, vacuum distillation, zone refining by induction heat and electron beam melting. Gas chromatography was investigated as an analytical tool for determination of oxygen in metals.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 1963
- Accession Number
- AD0405751
Entities
People
- C. J. Heinink