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Author Stampfer, J. F. (Jr.) ♦ Holley, C. E. (Jr.) ♦ Suttle, J. F.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CHEMISTRY ♦ DECOMPOSITION ♦ DEUTERIUM COMPOUNDS ♦ DIFFUSION ♦ HYDROGEN ♦ MAGNESIUM ♦ MAGNESIUM HYDRIDES ♦ MEASURED VALUES ♦ PRESSURE ♦ SOLUBILITY ♦ THERMODYNAMICS
Abstract The decomposition pressure of magnesium hydride was measured under conditions such that the precision and accuracy of the temperature and pressure measurements could be estimated and the composition of the solid phases determined. The diffusion of hydrogen through the walls of the apparatus and the solubility of hydrogen in the walls was considered. The apparatus and the method of making the measurements are described. The decomposition pressures were converted to fugacities hy use of the BeattieBridgeman equation of state for hydrogen and fitted to straight lines to give R ln f/sub H/sub 2/ = (-17,785 plus or minus 76)/T + 32.28 plus or minus 0.45 acd R ln f/sub D/sub 2/ = (- 17,480 plus or minus 110)/T + 32.48 plus or minus 0.17. Magnesium hydride, MgH/sub 2/, was found to be a stoichiometric compound within the limits of error of the measurements. The solubility of hydrogen in magnesium was found to increase from 2 atom% at 440 deg to 10 atom% at 560 deg . From these measurements thermodynamic functions for the formation of magnesium hydride and magnesium deuteride were estimated. (auth)
ISSN 00027863
Educational Use Research
Learning Resource Type Article
Publisher Date 1960-07-20
Publisher Department Los Alamos Scientific Lab., N. Mex. ♦ Univ. of New Mexico, Albuquerque
Journal Journal of the American Chemical Society
Volume Number 82
Issue Number 14
Organization Los Alamos Scientific Lab., N. Mex. ♦ Univ. of New Mexico, Albuquerque


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