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Elastic properties and surface damage resistance of nitrogen-rich (Ca,Sr)–Si–O–N glasses
Linnaeus University, Faculty of Science and Engineering, School of Engineering. (Glass group)
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2010 (English)In: Journal of Non-Crystalline Solids, ISSN 0022-3093, E-ISSN 1873-4812, Vol. 356, no 41-42, p. 2120-2126Article in journal (Refereed) Published
Abstract [en]

Ca and Sr-based oxynitride glasses with very high nitrogen content have been synthesized using metal hydrides as primary precursors. Values of Young's modulus, shear modulus, bulk modulus and Poisson's ratio were determined by means of ultrasonic echography. Vickers micro-indentation has been used to characterize hardness and indentation fracture toughness behaviour. Elastic moduli were found to increase linearly with nitrogen content, with the highest value of Young's modulus at 135 GPa, for a Ca-glass with 58 e/o of nitrogen. The Sr-glasses exhibit lower elastic moduli than Ca glasses. Poisson's ratio, hardness, indentation fracture toughness, crack initiation load and surface damage resistance were found to increase with increasing nitrogen content for both glass series.

Place, publisher, year, edition, pages
2010. Vol. 356, no 41-42, p. 2120-2126
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Engineering and Technology
Research subject
Technology (byts ev till Engineering), Glass Technology
Identifiers
URN: urn:nbn:se:lnu:diva-10105DOI: 10.1016/j.jnoncrysol.2010.07.043OAI: oai:DiVA.org:lnu-10105DiVA, id: diva2:388491
Available from: 2011-01-17 Created: 2011-01-17 Last updated: 2017-12-11Bibliographically approved

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