Small-angle neutron scattering characterization of processing/microstructure relationships in the sintering of crystalline and glassy ceramics

Journal Article · Sun Dec 01 00:00:00 EST 1991 · Journal of Materials Research; (United States)

DOI:https://doi.org/10.1557/JMR.1991.2706· OSTI ID:5527702

Long, G G; Krueger, S ^[1]; Gerhardt, R A ^[2]; Page, R A ^[3]

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1. National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
2. Rutgers University, Piscataway, New Jersey 08855 (United States)
3. Southwest Research Institute, San Antonio, Texas 78228 (United States)

Small-angle neutron scattering measurements were used to examine the pore microstructure evolution of glassy silica and polycrystalline alpha-alumina as a function of sintering. It was shown that the two major sintering mechanisms, viscous flow and surface and volume diffusion, lead to very different microstructure evolution signatures in terms of the average pore size as a function of density. However, with respect to topology, the evolution of the porosity per unit surface area as a function of density is remarkably similar in the two systems.

• DOE Contract Number: FG05-84ER45063
• OSTI ID: 5527702
• Journal Information: Journal of Materials Research; (United States), Vol. 6:12; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
POROSITY
SINTERING
SILICON OXIDES
DENSITY
GLASS
MICROSTRUCTURE
NEUTRON DIFFRACTION
POLYCRYSTALS
SMALL ANGLE SCATTERING
SOL-GEL PROCESS
TOPOLOGY
ALUMINIUM COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL STRUCTURE
CRYSTALS
DIFFRACTION
FABRICATION
MATHEMATICS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
SILICON COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies