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Physical Properties of Quenched Glasses in the Li 2 O‐ZrO 2 ‐SiO 2 System
Author(s) -
Novaes de Oliveira Antonio Pedro,
Barbieri Luisa,
Leonelli Cristina,
Manfredini Tiziano,
Pellacani Gian Carlo
Publication year - 1996
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1996.tb08552.x
Subject(s) - thermal expansion , materials science , softening point , indentation hardness , analytical chemistry (journal) , differential thermal analysis , softening , glass transition , diffraction , differential scanning calorimetry , base (topology) , mineralogy , microstructure , thermodynamics , chemistry , composite material , chromatography , optics , physics , polymer , mathematical analysis , mathematics
The behavior and some physical and thermal properties of a 30Li 2 O‐70SiO 2 base glass composition with addition of ZrSiO 4 in the as‐quenched state was investigated with the aid of X‐ray diffraction (XRD), differential thermal analysis (DTA), thermal expansion and microhardness measurements, as well as density measurements. Transparent glasses prepared by the addition of ZrSiO 4 up to 10.30 mol% were obtained. ZrSiO 4 was found to decrease the expansion coefficient of the investigated glasses from 11.0 × 10 −6 to 7.96 × 10 −6 °C −1 . The glass transition and softening point temperatures of the glasses showed a reverse behavior. On the other hand, both hardness and density increased for successive increases of the ZrSiO 4 amounts, with the highest values of 6.3 GPa and 2.65 g/cm 3 , respectively.