Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 42: Issue 6
Thermal expansion studies on some gamma-irradiated binary borate glasses
Author:
F. Ezz-Eldin National Center for Radiation Research and Technology Nasr-City P.O.Box 29 Cairo Egypt

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Pages:
1221–1230
Online Publication Date:
09 Jan 2007
Publication Date:
01 Dec 1994
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02546931
Keywords:
binary borate glasses; glasses; glass ceramics
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Abstract  

The thermal expansion, density and molar volume of some binary borate glasses were measured before and after exposure to a gamma-ray dose of 103 kGy. The expansion curves for all glasses, which were measured from room temperature to above the softening temperature, displayed similar characteristics. Increase of the lead oxide content decreased the thermal coefficient of expansion, but the effects of different alkali metal cations were shown to depend on their ionic radii. The various proposed mechanisms of thermal expansion are dealt with. The experimental results could be explained by considering the bond strengths, the polarizing powers of the different cations and the damage produced by radiation. The possible compaction of the structure due to irradiation is also discussed.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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