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Electrical conductivity measurements on silicate melts using the loop techniqueA new method is described for measurement of the electrical conductivity of silicate melts under controlled oxygen partial pressure at temperatures to 1550 C. The melt samples are suspended as droplets on platinum-rhodium loops, minimizing iron loss from the melt due to alloying with platinum, and providing maximum surface exposure of the melt to the oxygen-buffering gas atmosphere. The latter provides extremely rapid equilibration of the melt with the imposed oxygen partial pressure. The loop technique involves a minimum of setup time and cost, provides reproducible results to within + or - 5% and is well suited to electrical conductivity studies on silicate melts containing redox cations.
Document ID
19760055309
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Waff, H. S.
(Yale University New Haven, Conn., United States)
Date Acquired
August 8, 2013
Publication Date
July 1, 1976
Publication Information
Publication: Review of Scientific Instruments
Volume: 47
Subject Category
Instrumentation And Photography
Accession Number
76A38275
Funding Number(s)
CONTRACT_GRANT: NGL-38-003-202
Distribution Limits
Public
Copyright
Other

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