Formation of crystalline phases in (SiO2–CaO–Fe2O3)–TiO2 based glasses

Poirier, Thierry; Labrador, Norberto; Alvarez, M.G.; Lavelle, C.; Enet, N.; Lira, J.

doi:10.1016/j.matlet.2004.10.009

Cited by 8 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The selected composition was (wt%) 55SiO 2 -35CaO-10Fe 2 O 3 [7] and its thermal and hydrodynamic characteristics (glass transition temperature, viscosity, surface tension and specific heat vs temperature, see table 1) were taken or estimated from literature. As particles were mostly aspired by the flame before being propelled [18], it was necessary to measure At T>Tg α = 48.9.10 -6 K -1 [20] Density At 273 K : ρ = 3000 kg/m 3 ρ(T) = ρ 0 / (1+α) 3 [24] Emissivity ε=0.9…”

Section: Methodsmentioning

confidence: 99%

“…Moreover, the ferromagnetic behavior allows microspheres to be delivered to specific targets within the body [6]. Devitrifying iron oxide by adequate annealing fused SiO 2 -CaO-Fe 2 O 3 glass is known as a safe way for introducing such a ferrimagnetic crystalline phase within the glassy phase [4,7,8]. However the resulting material still requires a controlled size and smooth surface in order to be injected through the blood vessels or directly to the tumor [6,9,10].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Smoothing Iron Oxide-Based Glass Particles With an Oxyacetylenic Flame

Poirier¹,

Labrador²,

Gamarra³

et al. 2005

HighTempMatProc

View full text Add to dashboard Cite

Milled particles from a (SiO2-CaO-Fe2O3) glass were smoothed by flame spraying, focusing on the elimination of superficial roughness or angularity without reaching complete fusion of the glass. The purpose of this study is the further application to glass ceramic microspheres where avoiding thermal resetting of the second phase is needed. Finite element modeling of the thermal and kinematical history of glass particles throughout the flame was performed in order to predict the suitable size range of injected particles. Crushed and sieved glass powders were sprayed into oxyacetylenic flame and characterized by SEM, showing the importance of the diameter and anisotropic morphology of angular feedstock when discriminating between superficial smoothing and complete fusion in the glass.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Smoothing Iron Oxide-Based Glass Particles With an Oxyacetylenic Flame

Poirier¹,

Labrador²,

Gamarra³

et al. 2005

HighTempMatProc

View full text Add to dashboard Cite

show abstract

“…Calcium silicate zirconium (CaO·SiO 2 ·ZrO 2 ) glass ceramics have been extensively studied and commercialized due to the wide range of useful properties such as low thermal expansion coefficient (TEC), creep resistance, good resistance to mechanical and thermal shock, and excellent chemical durability [1][2][3][4]. Crystallization control and prevention of pigment dissolution in glazes and ceramic matrix during firing are important for optimizing the properties, appearance and reproducibility of products [5][6][7].…”

Section: Introductionmentioning

confidence: 99%