Devitrification studies of wollastonite–tricalcium phosphate eutectic glass

Magallanes-Perdomo, M.; Pena, P.; Aza, Piedad N. De; Carrodeguas, Raúl García; Rodríguez, Miguel Á.; Turrillas, X.; Aza, S. De; Aza, Antonio H. De

doi:10.1016/j.actbio.2009.04.026

Cited by 37 publications

(37 citation statements)

References 60 publications

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“…18 The chemicals used for the synthesis of the eutectic glass were reagent-grade calcium carbonate (CaCO 3 , Merck, Darmstadt, Germany), high-purity amorphous silica (99.7 wt%, Strem Chemicals, USA) and high-purity synthetic Ca 3 (PO 4 ) 2 , which characteristics were reported previously. 17 The mixed powders were melted for 30 min in a Pt-10 wt% Rh crucible at 1600 • C. This process allowed obtaining a fused material with sufficiently low viscosity to be poured out onto a warm metal plate, avoiding at the same time any possibility of devitrification. Next, taking into account the dilatometric data 17 the glassy block was annealed at 795 • C and then slowly cooled down to room temperature in order to eliminate the stress formed during the cooling process.…”

Section: Methodsmentioning

confidence: 99%

“…In our previous studies, 16,17 the mechanism of the crystallisation of the wollastonite (CaSiO 3 , W)-tricalcium phosphate (Ca 3 (PO 4 ) 2 , TCP) eutectic glass was determined. In view of these findings, it was possible to design a series of heat treatment schedules and manufacture a wide range of bioglass ceramics containing various crystalline phases composed of phosphorous, silicon and calcium.…”

Section: Introductionmentioning

confidence: 99%

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Bone-like forming ability of apatite–wollastonite glass ceramic

Magallanes-Perdomo

Luklinska

Aza

et al. 2011

Journal of the European Ceramic Society

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bone-like forming ability of apatite–wollastonite glass ceramic

Magallanes-Perdomo

Luklinska

Aza

et al. 2011

Journal of the European Ceramic Society

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“…The glass samples were obtained from the powder mixture of wollastonite (high-purity reagent-grade CaSiO 3 , 99 wt.%, −200 mesh, Aldrich Chemistry, St. Louis MO, USA) and synthesized tricalcium phosphate (purity >99.9% and 1.50 Ca/P molar ratio, which characteristics were reported previously [23]) in the eutectic composition: 80% CaSiO 3 , 20% Ca 3 (PO 4 ) 2 expressed in mol%. Furthermore, a 1 wt.% of Nd 2 O 3 was added to the eutectic composite to obtain the doped samples.…”

Section: Glass Fabricationmentioning

confidence: 99%

“…In particular, the CaSiO 3 -Ca 3 (PO 4 ) 2 eutectic composite presents two interesting properties: in the first place, it is a bioactive material since tricalcium phosphate (TCP), Ca 3 (PO 4 ) 2 , is osteoconductive and bioactive (reasorbable) [18] and wollastonite (W), CaSiO 3 , is bioactive with osteostimulative properties [19]. The features, microstructure, bioactivity, biocompatibility, in vitro and in vivo behaviours of this binary system have been widely studied, both in crystalline and glassy form [19][20][21][22][23]. In the second place, this eutectic glass has excellent optical properties.…”

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confidence: 99%

Stress-induced buried waveguides in the 0.8CaSiO3–0.2Ca3(PO4)2 eutectic glass doped with Nd3+ ions

Sola

Mendibil

Aldana

et al. 2013

Applied Surface Science

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a b s t r a c tIn this work the fabrication of buried optical waveguides by femtosecond laser inscription in the 0.8CaSiO 3 -0.2Ca 3 (PO 4 ) 2 eutectic glass doped with Nd 3+ ions is reported. The glass samples were prepared by melting the eutectic powder mixture in a Pt-10 wt.% Rh crucible at 1600 • C and pouring it in a preheated brass mould. Afterwards, the glass was annealed to release the inner stresses. Buried waveguides were fabricated by focusing beneath the surface a pulsed Ti:sapphire laser with a pulsewidth of 120 fs working at 1 kHz. Two adjacent parallel tracks were written to define a region where an increase in the refractive index occurs. The effects produced by the variation of the laser pulse energy as well as the lateral separation between tracks, scanning speed and focusing distance were studied. After the laser processing, the near-field intensity distribution at 633 nm of the waveguide's modes was studied demonstrating the confinement of both, the TE as the TM polarizations. In order to diminish the losses induced by colour centres absorption, heat treatments were carried out in the samples. The waveguide's modes were compared with respect to the samples without heat treatments. The spectroscopic properties of the neodymium ions have been characterized to evaluate in what extent their optical properties could be modified by the waveguide fabrication process and to elucidate the potential application of such waveguides as integrated laser sources.

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“…%, 200 mesh, Aldrich Chemistry, St. Louis, MO, USA) and synthesized tricalcium phosphate (purity > 99.9% and 1.50 Ca/P molar ratio, whose characteristics were reported elsewhere 26 ) in the eutectic composition: 80% CaSiO 3 , 20% Ca 3 (PO 4 ) 2 expressed in mol. %.…”

Section: A Glass Fabricationmentioning

confidence: 99%

Ultrafast direct laser writing of cladding waveguides in the 0.8CaSiO3-0.2Ca3(PO4)2 eutectic glass doped with Nd3+ ions

Mendívil

Sola

Aldana

et al. 2015

Journal of Applied Physics

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We report on tubular cladding optical waveguides fabricated in Neodymium doped WollastoniteTricalcium Phosphate glass in the eutectic composition. The glass samples were prepared by melting the eutectic powder mixture in a Pt-Rh crucible at 1600 C and pouring it in a preheated brass mould. Afterwards, the glass was annealed to relieve the inner stresses. Cladding waveguides were fabricated by focusing beneath the sample surface using a pulsed Ti:sapphire laser with a pulsewidth of 120 fs working at 1 kHz. The optical properties of these waveguides have been assessed in terms of near-field intensity distribution and transmitted power, and these results have been compared to previously reported waveguides with double-line configuration. Optical properties have also been studied as function of the temperature. Heat treatments up to 700 C were carried out to diminish colour centre losses where waveguide's modes and transmitted power were compared in order to establish the annealing temperature at which the optimal optical properties were reached. Laser experiments are in progress to evaluate the ability of the waveguides for 1064 nm laser light generation under 800 nm optical pumping. V C 2015 AIP Publishing LLC.

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Devitrification studies of wollastonite–tricalcium phosphate eutectic glass

Cited by 37 publications

References 60 publications

Bone-like forming ability of apatite–wollastonite glass ceramic

Bone-like forming ability of apatite–wollastonite glass ceramic

Stress-induced buried waveguides in the 0.8CaSiO3–0.2Ca3(PO4)2 eutectic glass doped with Nd3+ ions

Ultrafast direct laser writing of cladding waveguides in the 0.8CaSiO3-0.2Ca3(PO4)2 eutectic glass doped with Nd3+ ions

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