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Small‐Angle Neutron Scattering from Porosity in Sintered Alumina
Author(s) -
HardmanRhyne K. A.,
Berk N. F.
Publication year - 1986
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1986.tb07378.x
Subject(s) - porosity , materials science , small angle neutron scattering , neutron scattering , ceramic , scattering , neutron , small angle scattering , volume fraction , composite material , mineralogy , optics , nuclear physics , chemistry , physics
A new approach for studying porosity in ceramic or metallic materials has been developed using multiple neutron scattering in the small‐angle regime. This technique enables the measurement of voids from 0.08 to 10 μm in size with 1% to 50% porosity. Whereas a fully dense alumina sample showed no evidence of multiple neutron‐scattering effects, a more porous alumina exhibited striking neutron wavelength dependence. The voids in the latter material are 1.48 μm in mean diameter and 10.5% in volume fraction.