Possible electrical double-layer contribution to the equilibrium thickness of intergranular Glass films in polycrystalline ceramics

Clarke, David R., Shaw, Thomas M., Philipse, Albert P. and Horn, Roger G. 1993, Possible electrical double-layer contribution to the equilibrium thickness of intergranular Glass films in polycrystalline ceramics, Journal of the American Ceramics Society, vol. 76, no. 5, pp. 1201-1204.


Title Possible electrical double-layer contribution to the equilibrium thickness of intergranular Glass films in polycrystalline ceramics
Author(s) Clarke, David R.
Shaw, Thomas M.
Philipse, Albert P.
Horn, Roger G.
Journal name Journal of the American Ceramics Society
Volume number 76
Issue number 5
Start page 1201
End page 1204
Total pages 4
Publisher Wiley-Blackwell Publishing
Place of publication New York, N.Y.
Publication date 1993-05
ISSN 0002-7820
1551-2916
Keyword(s) Electrical Double-Layer Contribution
Equilibrium Thickness
Intergranular Glass Films
Polycrystalline Ceramics
Summary The plausibility of the entropic repulsion of electrical double layers acting to stabilize an equilibrium thickness of intergranular glass films in polycrystalline ceramics is explored. Estimates of the screening length, surface potential, and surface charge required to provide a repulsive force sufficiently large to balance the attractive van der Waals and capillary forces for observable thicknesses of intergranular film are calculated and do not appear to be beyond possibility. However, it has yet to be established whether crystalline particles in a liquid-phase sintering medium possess an electrical double layer at high temperatures. If they do, such a surface charge layer may well have important consequences not only for liquid-phase sintering but also for high-frequency electrical properties and microwave sintering of ceramics containing a liquid phase.
Language eng
Field of Research 029999 Physical Sciences not elsewhere classified
Socio Economic Objective 970102 Expanding Knowledge in the Physical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©1993, Wiley-Blackwell
Persistent URL http://hdl.handle.net/10536/DRO/DU:30041435

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