Crystallisation of silicate and phosphate glasses

James, Peter; Iqbal, Yaseen; Jais, Umi Sarah; Jordery, S.; Lee, W.E.

doi:10.1016/s0022-3093(97)00247-0

Cited by 46 publications

(18 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2). Crystal branching, reported for specimens heat treated under more stringent conditions (502 h at 454°C) [26], was not observed. The crystallized fraction in the bulk amounted to about 4% for the sample heat treated for 87 h and 7% for the sample heat treated for 96 h.…”

Section: Microscopymentioning

confidence: 66%

Surface and bulk residual stresses in Li2O·2SiO2 glass–ceramics

Pinto

Ito

Crovace

et al. 2007

Journal of Non-Crystalline Solids

View full text Add to dashboard Cite

Section: Microscopymentioning

confidence: 66%

Surface and bulk residual stresses in Li2O·2SiO2 glass–ceramics

Pinto

Ito

Crovace

et al. 2007

Journal of Non-Crystalline Solids

View full text Add to dashboard Cite

“…11-0650). The b-Ca 2 P 2 O 7 phase typically arises from the crystallization of calcium phosphate glasses [22]. The sample containing 20 mol% of Na 2 O (c) is amorphous.…”

Section: Xrd Analysismentioning

confidence: 99%

Synthesis and structural characterization of P2O5–CaO–Na2O sol–gel materials

Carta¹,

Knowles²,

Smith³

et al. 2007

Journal of Non-Crystalline Solids

104

View full text Add to dashboard Cite

“…It is also the least understood aspect of crystallization in magmatic systems, in which melt composition and structure evolve during crystallization. Experimental studies of nucleation kinetics in silicate melts have traditionally focused on low-pressure, cooling-induced crystallization of terrestrial and lunar basalts (Baker and Grove 1985;Berkebile and Dowty 1982;Lofgren 1974Lofgren , 1983, rhyolites (Fenn 1977;London 1992;Swanson 1977), and simple systems (Davis et al 1997;Deubener 2000;James et al 1997). Numerical treatments of thermodynamically well-characterized simple systems are starting to yield insights into the transient period before crystals are detectable (Davis and Ihinger 2002).…”

Section: Introductionmentioning

confidence: 99%

Crystal nucleation in hydrous rhyolite: Experimental data applied to classical theory

Hammer

2004

American Mineralogist

View full text Add to dashboard Cite

Feldspar nucleation rate data obtained by laboratory decompression of hydrous silicate melt are interpreted in view of the classical theory of nucleation (CNT) and a non-classical variation, the diffuse-interface theory (DIT). The nucleation rate data can be modeled by the CNT formalism only if the interfacial free energy (σ) is allowed to vary as a function of composition. The values thus obtained vary by a factor of four (0.024-0.100 J/m 2 ) and decrease systematically over a sixfold increase in dissolved H 2 O content (0.8-4.8 wt%). This result is qualitatively consistent with the effects of dissolved H 2 O on the liquid-vapor interfacial free energy in haplogranite magma (Mangan and Sisson 2000) and the liquid-crystal interfacial free energy in the one-component Li-disilicate system (Davis et al. 1997).The DIT states that the interfacial region between the bulk solid and bulk melt has thermodynamic properties intermediate between these phases, and that σ is defi ned as the difference between the interfacial enthalpy (H int ) and interfacial entropy (TS int ). If the DIT model is correct, the nucleation rate data for feldspar may indicate that: (1) dissolved H 2 O content controls the spatial distribution of enthalpy and confi gurational entropy around incipient crystals, and (2) the spatial gradients of these potentials diverge during devolatilization.This study suggests that crystal nucleation studies may yield insights into the structure and thermodynamics of hydrous melts; likewise, experimental studies are important for refi ning a physical understanding of nucleation phenomena. Our results can be applied to quantitative numerical models of ascent-driven magma crystallization.

show abstract

Crystallisation of silicate and phosphate glasses

Cited by 46 publications

References 31 publications

Surface and bulk residual stresses in Li2O·2SiO2 glass–ceramics

Surface and bulk residual stresses in Li2O·2SiO2 glass–ceramics

Synthesis and structural characterization of P2O5–CaO–Na2O sol–gel materials

Crystal nucleation in hydrous rhyolite: Experimental data applied to classical theory

Contact Info

Product

Resources

About