Structure-Property Relations of Calcium-Sulfur-Hydrogen: An Investigation of the Electromechanical Properties
Yuan, Lijian
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https://hdl.handle.net/2142/82909
Description
Title
Structure-Property Relations of Calcium-Sulfur-Hydrogen: An Investigation of the Electromechanical Properties
Author(s)
Yuan, Lijian
Issue Date
1998
Doctoral Committee Chair(s)
Dwight Viehland
Department of Study
Materials Science and Engineering
Discipline
Materials Science and Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Materials Science
Language
eng
Abstract
A strong decrease in the induced strains was observed with decreasing temperature due to the influence of ice formation. This decrease was interpreted in terms of a decrease in the electroosmotic volumetric flux and hydraulic permeability with decreasing temperature. The strong non-linearity in the induced strains was found with respect to the electric field strength. The presence of non-linear electric streaming current vs. electric field characteristics was examined, which was modeled by using an electrokinetic equation of state. Evidence of an anomalous temperature dependence in both electrical conductivity and dielectric permitivity was observed, indicating the presence of anomalies associated with a percolation-like transition.
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