Abstract
dc:description.abstract"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 (-Q<sub>b</sub>/kT), where (D'Δ)₀ is approximately 10⁻⁷ cm³/sec and Q<sub></sub>b 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.
Degree
thesis:*- Name thesis:degree_name
- Ph. D. in Metallurgical Engineering
- Grantor
- University of Missouri--Rolla
- Year dc:date.available
- 2016
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Riggs, Kenneth Ray
Subjects
dc:subject × 1Identifiers
dc:identifier.*- Repository record dc:identifier
- https://scholarsmine.mst.edu/doctoral_dissertations/2180
- OAI identifier oai:identifier
- oai:scholarsmine.mst.edu:doctoral_dissertations-3182