Hardness and refractive index of Ca–Si–O–N glasses
2009 (English)In: Journal of Non-Crystalline Solids, ISSN 0022-3093, E-ISSN 1873-4812, Vol. 355, no 4-5, 301-304 p.Article in journal (Refereed) Published
Vickers hardness and refractive index was determined for Ca–Si–O–N glasses with 14.6–58 e/o N and 19–42 e/o Ca. By applying slow cooling rates, transparent glasses were obtained for compositions near Ca9.94Si10O17.73N8.14, while the majority of the glasses were opaque due to small inclusions of elemental Si and/or Ca-silicide. Determined glass densities varied between 2.80 and 3.25 g/cm3. Hardness was found to vary from 7.3 to 10.1 GPa at a load of 500 g and, respectively increase and decrease linearly with N and Ca content. The refractive index was found to increase linearly with N content from 1.62 to 1.95 and showed no significant dependence on Ca content.
Place, publisher, year, edition, pages
2009. Vol. 355, no 4-5, 301-304 p.
Oxynitride glasses, Hardness, Nitrogen-containing glass
IdentifiersURN: urn:nbn:se:su:diva-25746DOI: 10.1016/j.jnoncrysol.2008.11.019OAI: oai:DiVA.org:su-25746DiVA: diva2:200419