Sintering characterization of UO2 powders

W. Timmermans; A. van Heck-Hennen; F. Gorle; R. de Batist

doi:10.1016/0022-3115(78)90423-3

Sintering characterization of UO₂ powders

W. Timmermans, A. van Heck-Hennen, F. Gorle, R. de Batist

Research output › peer-review

Abstract

The influence of a number of powder characteristics on the sintering behaviour of UO₂ has been evaluated. A good correlation is found between the green and sintered densities (d_g and d_s) and the specific surface area as determined by Knudsen flow permeametry. This correlation, however, does not reveal the differences in behaviour which are borne out by the sintering index defined as: I_s = (d_s - d_g)/(100 - d_g). These differences are explained in terms of the absence or presence of open porosity within the powders, which can be measured by means of mercury porosimetry. Thermal treatments have a more pronounced effect on the sinterability of powders with open porosity than on those without.

Original language	English
Pages (from-to)	256-267
Number of pages	12
Journal	Journal of Nuclear Materials
Volume	71
Issue number	2
DOIs	https://doi.org/10.1016/0022-3115(78)90423-3
State	Published - Jan 1978

ASJC Scopus subject areas

Nuclear and High Energy Physics
General Materials Science
Nuclear Energy and Engineering

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10.1016/0022-3115(78)90423-3

Cite this

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title = "Sintering characterization of UO2 powders",

abstract = "The influence of a number of powder characteristics on the sintering behaviour of UO2 has been evaluated. A good correlation is found between the green and sintered densities (dg and ds) and the specific surface area as determined by Knudsen flow permeametry. This correlation, however, does not reveal the differences in behaviour which are borne out by the sintering index defined as: Is = (ds - dg)/(100 - dg). These differences are explained in terms of the absence or presence of open porosity within the powders, which can be measured by means of mercury porosimetry. Thermal treatments have a more pronounced effect on the sinterability of powders with open porosity than on those without.",

author = "W. Timmermans and {van Heck-Hennen}, A. and F. Gorle and {de Batist}, R.",

year = "1978",

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AU - de Batist, R.

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N2 - The influence of a number of powder characteristics on the sintering behaviour of UO2 has been evaluated. A good correlation is found between the green and sintered densities (dg and ds) and the specific surface area as determined by Knudsen flow permeametry. This correlation, however, does not reveal the differences in behaviour which are borne out by the sintering index defined as: Is = (ds - dg)/(100 - dg). These differences are explained in terms of the absence or presence of open porosity within the powders, which can be measured by means of mercury porosimetry. Thermal treatments have a more pronounced effect on the sinterability of powders with open porosity than on those without.

AB - The influence of a number of powder characteristics on the sintering behaviour of UO2 has been evaluated. A good correlation is found between the green and sintered densities (dg and ds) and the specific surface area as determined by Knudsen flow permeametry. This correlation, however, does not reveal the differences in behaviour which are borne out by the sintering index defined as: Is = (ds - dg)/(100 - dg). These differences are explained in terms of the absence or presence of open porosity within the powders, which can be measured by means of mercury porosimetry. Thermal treatments have a more pronounced effect on the sinterability of powders with open porosity than on those without.

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