"The diffusion of ²²sodium and ³⁶chlorine along tilt and twist grain boundaries in pure and calcium chloride doped sodium chloride bicrystals was investigated. No enhanced diffusion of ²²sodium along the grain boundaries was observed. Between 400°C and 500°C the chlorine grain boundary diffusion parameter, D'Δ, is described by D'Δ = (D'Δ)₀exp (-Qb/kT), where (D'Δ)₀ is approximately 10⁻⁷ cm³/sec and Qb is 1.15 ± .30 eV. The grain boundary angle, the grain boundary character (tilt or twist), and the calcium chloride concentration appear to have no pronounced effect upon the observed chlorine grain boundary diffusion. The ionic movement is believed to occur in the grain boundary core region by the movement of "interstitial" type chlorine ions"--Abstract, page i.
Weart, Harry W.
Leighly, Hollis P., 1923-2004
Moore, Robert E., 1930-2003
Ownby, P. Darrell
Frad, William A., 1909-1974
Materials Science and Engineering
Ph. D. in Metallurgical Engineering
United States. Defense Advanced Research Projects Agency
University of Missouri--Rolla
v, 55 pages
© 1969 Kenneth Ray Riggs, All rights reserved.
Dissertation - Open Access
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Riggs, Kenneth Ray, "Grain boundary self-diffusion in sodium chloride" (1969). Doctoral Dissertations. 2180.