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Nucleation and Crystallization of a Lithium Aluminosilicate Glass
Author(s) -
Barbieri Luisa,
Leonelli Cristina,
Manfredini Tiziano,
Siligardi Cristina,
Corradi Anna Bonamartini,
Mustarelli Piercarlo,
Tomasi Corrado
Publication year - 1997
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.1151-2916.1997.tb03235.x
Subject(s) - aluminosilicate , nucleation , crystallization , materials science , glass ceramic , phase (matter) , supercooling , mineralogy , chemical engineering , ceramic , lithium (medication) , thermodynamics , composite material , chemistry , medicine , physics , organic chemistry , engineering , endocrinology , catalysis , biochemistry
An aluminosilicate glass of composition 61SiO 2 6Al 2 O 3 10MgO6ZnO·12Li 2 O·5TiO 2 (mol%) has been prepared by a melting process and investigated as far as crystallization is concerned. Glass‐ceramic is easily obtained because glass shows a high tendency to crystallize starting from 700°C. The crystalline phases evolve with temperature, showing the aluminosilicates to be the main phase up to 1050°C, followed by metasilicates and silicates, some of which have lower melting points. The titanates of Mg and Zn develop from the phase‐separated glass, soon after T g , and grow to form nucleation centers for the other crystalline phases. The evolution from phase‐separated glass to glass‐ceramic has been followed by many thermal, diffractometric, spectroscopic, and microscopic techniques.