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

Published online by Cambridge University Press:  31 January 2011

G.G. Long ,
S. Krueger ,
R.A. Gerhardt  and
R.A. Page
G.G. Long
Affiliation:
National Institute of Standards and Technology, Gaithersburg, Maryland 20899
S. Krueger
Affiliation:
National Institute of Standards and Technology, Gaithersburg, Maryland 20899
R.A. Gerhardt
Affiliation:
Rutgers University, Piscataway, New Jersey 08855
R.A. Page
Affiliation:
Southwest Research Institute, San Antonio, Texas 78228
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Abstract

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.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 12 , December 1991 , pp. 2706 - 2715
Copyright
Copyright © Materials Research Society 1991

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