Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 69: Issue 3
A model for the fragility of the melts
Author:
M. Aniya Kumamoto University Department of Physics, Faculty of Science Kumamoto 860-8555 Japan Kumamoto 860-8555 Japan

Search for other papers by M. Aniya in
Current site
Google Scholar
PubMed Close
Pages:
971–978
Online Publication Date:
02 Nov 2004
Publication Date:
01 Jul 2002
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1020636829278
Keywords:
fragility; viscosity; glass forming materials
Restricted access

Abstract  

The concept of fragility has been used widely to characterize the temperature dependence of the viscosity of glass forming materials. However, the physical background that determines the degree of fragility is still not well understood. In the present study an expression for the fragility is derived based on a simple model of the melt. According to the model, the fragility is determined by the relaxation of structural units that form the melt, and is described in terms of the bond strength (E0), coordination number (Z0), and their fluctuations (ΔE and ΔZ). It is shown that a strong system is characterized by large value of total bond strength (Z0E0) and small value of its fluctuation ((ΔZ)2(ΔE)2). On the other hand, a fragile system is characterized by small value of total bond strength and large value of its fluctuation.

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

To see the editorial board, please visit the website of Springer Nature.

Manuscript Submission: HERE

For subscription options, please visit the website of Springer Nature.

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)

Monthly Content Usage

Abstract Views Full Text Views PDF Downloads
Jun 2024 2 0 0
Jul 2024 2 0 0
Aug 2024 4 0 0
Sep 2024 15 0 0
Oct 2024 46 0 0
Nov 2024 10 0 0
Dec 2024 0 0 0