Liquid-Phase Sintering of Ceramics

Liquid-Phase Sintering of Ceramics

Expressions for the sintering rate in liquid‐phase sintering are derived for coupled‐interface dissolution and liquid‐phase diffusion. The analysis reveals the important role of stress gradients in the grain boundary phase and also shows that such gradients cannot be supplied by liquid‐phase flow. S...

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Veröffentlicht in:J. Am. Ceram. Soc.; (United States) 1987-10, Vol.70 (10), p.708-713
Hauptverfasser: MARION, J. E., HSUEH, C. H., EVANS, A. G.
Format: Artikel
Sprache:eng
Schlagworte:
360201 - Ceramics, Cermets, & Refractories- Preparation & Fabrication
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
CERAMICS
CHALCOGENIDES
Chemical industry and chemicals
CRYSTAL STRUCTURE
DIFFUSION
DISSOLUTION
ELECTRON MICROSCOPY
EQUATIONS
Exact sciences and technology
FABRICATION
FLUIDS
GRAIN BOUNDARIES
INTERFACES
LIQUIDS
MATERIALS SCIENCE
MICROSCOPY
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
SINTERING
STRESSES
TRANSMISSION ELECTRON MICROSCOPY
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Beschreibung
Zusammenfassung:Expressions for the sintering rate in liquid‐phase sintering are derived for coupled‐interface dissolution and liquid‐phase diffusion. The analysis reveals the important role of stress gradients in the grain boundary phase and also shows that such gradients cannot be supplied by liquid‐phase flow. Stress‐supporting structure in the grain boundary phase is thus implied. The probable existence of such structure is revealed by diffuse dark‐field scattering studies, using transmission electron microscopy, on partially sintered alumina/anorthite bodies.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1987.tb04868.x