Accelerated crystal growth in a lithia aluminosilicate glass

Non-stoichiometric crystal nucleation in a spodumene glass containing TiO2 as seed former: Effects on the viscosity of the residual melt

“…intriguingly close to the viscosity of a TiO2-free spodumene melt from literature[15] (dashed black line in Fig.…”

“…Several authors examined the effects of partial crystallization on viscosity: apart from the long-known increase in effective viscosity due to the presence of suspended solid particles [14], the non-stoichiometric precipitation of crystal phases was recently shown to possibly reduce [15] or augment [16,17] the local viscosity of the residual melt by several orders of magnitude, due to the preferential extraction of certain chemical components. Moreover, nanoscale heterogeneities produced by diffusion before and during crystal nucleation (e.g., compositional enrichments or shells around crystals [18][19][20]) were suggested to increase significantly the effective viscosity of the system, far beyond the mere chemical modification of the carrier liquid phase [21].…”

Pressure‐driven homogenization of lithium disilicate glasses

“…[8][9][10] The control of the crystallization enabled the formation of glass-ceramics, which are materials that combine the properties of both glasses and ceramics. [11][12][13][14] These glass-ceramics have a unique combination of high strength and toughness, bioactivity, as well as excellent thermal stability. This set of properties made them useful in dental and medical applications, such as dental crowns and implants.…”

“…The degree of depolymerization of the structure depends on the type and content of the modifier and affects the glass properties, such as mechanical and optical properties, as well as its crystallization behavior 8–10 . The control of the crystallization enabled the formation of glass–ceramics, which are materials that combine the properties of both glasses and ceramics 11–14 . These glass–ceramics have a unique combination of high strength and toughness, bioactivity, as well as excellent thermal stability.…”