NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login

Due to the lapse in federal government funding, NASA is not updating this website. We sincerely regret this inconvenience.

Back to Results
Diffusion and solubility of oxygen in silverThe diffusion and solubility of oxygen in Ag in the temperature range between 412 and 862 C was determined. The following interpolation formula was found for the solubility: L = 8.19.1/100.exp(-11 860/RT)Mol O2/g.At.Ag.at 1/.5. The process obeys the Sieverts square root law within the limits of error. The dissolution of oxygen in Ag may be accompanied by the dissociation of the oxygen molecules into atoms. The tests on Ag-foils reveal that below a temperature of about 500 C a higher solubility is simulated by the adsorption of oxygen. The diffusion coefficient of oxygen in silver obeys the following equation: D = 2.72.1/100.exp(-11 000/RT)sq cm/s. The relatively low activation energy of 11 kcal/g.At suggests that the diffusion of oxygen takes places over interstitial sites.
Document ID
19860012184
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Eichenauer, W. (NASA Headquarters Washington, DC United States)
Miller, G. (NASA Headquarters Washington, DC United States)
Date Acquired
September 5, 2013
Publication Date
November 1, 1985
Subject Category
Metallic Materials
Report/Patent Number
NASA-TM-77938
NAS 1.15:77938
Report Number: NASA-TM-77938
Report Number: NAS 1.15:77938
Accession Number
86N21655
Funding Number(s)
CONTRACT_GRANT: NASW-4005
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available