Change search
ReferencesLink to record
Permanent link

Direct link
Viscosity of high-nitrogen content Ca-Si-O-N glasses
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK), Inorganic and Structural Chemistry.
2010 (English)In: Journal of the European Ceramic Society, ISSN 0955-2219, Vol. 30, no 16, 3455-3458 p.Article in journal (Refereed) Published
Abstract [en]

The viscosity of three high-nitrogen content Ca-Si-O-N glasses, with 30-58 e/o N and 36-39 e/o Ca, was determined by micro-indentation. The measurements were made using an automated set-up, designed and built in-house, capable of measurements up to 1200 degrees C with applied loads of 0.01-15 N. The viscosity increases significantly with the nitrogen content and reaches viscosity values close to reported values for rare-earth silica oxynitride glasses. The glass transition temperatures range between 878 and 995 degrees C and are in very good agreement with values measured by differential thermal analysis. The apparent viscosity activation energies are very high, ranging from 855 to 2170 kJ/mol. The glasses can accordingly be classified as being both very refractory and very fragile. Implications of the viscosity values and mechanical properties of the glasses for their structures are discussed.

Place, publisher, year, edition, pages
2010. Vol. 30, no 16, 3455-3458 p.
Keyword [en]
Creep, Mechanical properties, Nitrides, Powders-gas phase reaction, Glass
National Category
Natural Sciences
URN: urn:nbn:se:su:diva-51668DOI: 10.1016/j.jeurceramsoc.2010.07.039ISI: 000283411200021OAI: diva2:385845
authorCount :4Available from: 2011-01-12 Created: 2011-01-12 Last updated: 2011-01-12Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Grins, Jekabs
By organisation
Inorganic and Structural Chemistry
In the same journal
Journal of the European Ceramic Society
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 36 hits
ReferencesLink to record
Permanent link

Direct link