STUDY OF THE PURIFICATION OF ALUMINUM BY THE METHOD OF ZONE MELTING AND NEUTRON ACTIVATION ANALYSIS

Journal Article · Mon Jan 01 04:00:00 EST 1962 · Tokyo Metropolitan Isotope Centre Ann. Rept.

OSTI ID:4635255

Kobayashi, M; Maeda, S; Sawai, T; Kurosu, H

BS>To study the mechanism of the zone-refining of aluminum, a molten zone was passed along a specimen (5mm diam x 300mm) of 99.99% purity to which was added a trace amount of antimony, samarium, iron, and scandium. The relative purification efficiency of antimony, samarium, scandium, and iron in 99.99% aluminum were about 0.2, 0.1, 0.5, and 0.1 respectively, but scandium was hardly excluded. The metallographical feature of purification of the specimens after single-pass zone-refining was observed by autoradiography. For the zone-refining operation of aluminum, two apparatuses were employed, one a high frequency inductionheated zone-refining apparatus having a molten-zone velocity of 0.6mm/ min, the other an electron-bombardment floating zone-refining apparatus having a molten-zone velocity of 1.8mm/min. The distribution of each trace element in the specimen after zone-refining was determined by neutron activation analysis. The radioinduced activity of the specimens was measured with a well-type scintillation counter and gamma -ray spectrometer. (auth)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-036210
• OSTI ID: 4635255
• Journal Information: Tokyo Metropolitan Isotope Centre Ann. Rept., Journal Name: Tokyo Metropolitan Isotope Centre Ann. Rept. Vol. Vol: 1
• Country of Publication: Country unknown/Code not available
• Language: French

Related Subjects

ACTIVATION ANALYSIS
ALUMINUM
ANTIMONY
DISTRIBUTION
ELECTRON BEAMS
GAMMA SPECTROMETERS
HEATING
IMPURITIES
INDUCTION
IRON
LABORATORY EQUIPMENT
MEASURED VALUES
MELTING
METALLOGRAPHY
METALS, CERAMICS, AND OTHER MATERIALS
NEUTRONS
RADIOAUTOGRAPHY
REFINING
SAMARIUM
SCANDIUM
SCINTILLATION COUNTERS
TRACE AMOUNTS
TRACER TECHNIQUES
VELOCITY
ZONE MELTING
ZONES