Single-phase silicocarnotite synthesis in the subsystem Ca3(PO4)2–Ca2SiO4

Serena, S.; Saínz, M.A.; Caballero, A.

doi:10.1016/j.ceramint.2014.01.022

Cited by 37 publications

(38 citation statements)

References 32 publications

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“…The powders were isostatic pressing at 200 MPa to form green compact and then heat treated at 1550 1C for 2 h, cooled to 1400 1C and maintained for 4 h before cooling at room temperature. The chemical analysis of the synthesized material as well as XRD, FTIR and micro-Raman results confirmed that the obtained material contains silicocarnotite as single phase [17].…”

Section: Methodssupporting

confidence: 76%

“…Synthesized silicocarnotite was obtained following the process described in a previous work [17]. Silicocarnotitemonophasic materials were obtained from the mixture of presynthesized dicalcium silicate and tricalcium phosphate with a molar ratio Ca 3 (PO 4 ) 2 /Ca 2 SiO 4 1:1.…”

Section: Methodsmentioning

confidence: 99%

“…Before immersion in SBF, the sample exhibit intense infrared bands groups in the 800-1100 cm À 1 spectral region; a first group is observed at 852, 882 and 940 cm À 1 and a second group at 1013 and 1062 cm À 1 . The spectrum correspond to silicocarnotite phase, as discussed in a previous work [17]; at wavenumer lower than 900 cm À 1 the absorption bands, are related with those corresponding to silicate network, mainly to the symmetric stretching mode of SiO 4 groups. The bands observed from 900 up to 1025 cm À 1 correspond to the overlapping of stretching vibrations of phosphate and silicate groups [16,[24][25][26].…”

Section: Atr-ftir Characterizationmentioning

confidence: 98%

“…In all samples close pores ($ 3-5 μm) and open pores in a relation $ 2:1 respectively can be observed. The composition of the material determined by quantitative analysis by EDS in different areas of the sample surface was around 56.9% CaO, 11.3% SiO 2 , 31.7% P 2 O 5 and 0,05% MgO (wt%) close to the composition of the synthesized silicocarnotite determined by X-ray Fluorescence (XRF) spectrometry chemical analysis (57.89 CaO, 11.58 SiO 2 , 30.48 P 2 O 5 , 0.06MgO (wt%)) [17]. This result indicates that the composition is very homogeneous all over the material surface.…”

Section: Fe-sem-eds Analysis Of the Silicocarnotite Surfacementioning

confidence: 99%

“…The synthesis of silicocarnotite monophasic material was addressed by the present authors in a previous work [17] on the basis of the phase diagram of the system Ca 3 (PO 4 ) 2 -Ca 2 SiO 4 [11][12][13]. The synthesis by solid state reaction of presynthesized tricalcium phosphate and dicalcium silicate was proposed as a simple-route that allows designing monophasic silicocarnotite materials.…”

Section: Introductionmentioning

confidence: 99%

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New evaluation of the in vitro response of silicocarnotite monophasic material

Serena

Caballero

Aza

et al. 2015

Ceramics International

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Section: Methodssupporting

confidence: 76%

Section: Methodsmentioning

confidence: 99%

Section: Atr-ftir Characterizationmentioning

confidence: 98%

Section: Fe-sem-eds Analysis Of the Silicocarnotite Surfacementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

New evaluation of the in vitro response of silicocarnotite monophasic material

Serena

Caballero

Aza

et al. 2015

Ceramics International

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Mechanochemical Synthesis of SiO₄^4–‐Substituted Hydroxyapatite, Part III – Thermal Stability

et al. 2016

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Thermal stability of mechanochemically synthesized silicon‐substituted hydroxyapatite containing 0.6, 0.8, 1.0, and 1.2 mol of silicon per mol of apatite unit cell has been studied for the first time. The powders of the silicon‐substituted hydroxyapatite were annealed within the temperature range 700–1300 °C. It was found that the substituted hydroxyapatites remain single‐phase after annealing at temperatures of up to 900 °C for all concentrations of added silicon. The second phase – silicocarnotite Ca5(PO4)2SiO4 – appears in the materials containing 1.0 and 1.2 mol of added silicon that have been annealed at 1000 °C. In the powder containing 0.8 mol of added silicon, silicocarnotite was detected after annealing at 1100 °C. The formation of silicocarnotite is likely to occur in the nanoparticles of the silicon‐substituted hydroxyapatite with silicon concentrations much higher than the average value. It was found that the silicon‐substituted hydroxyapatite containing 0.6 mol of silicon per mol of apatite unit cell has the highest thermal stability and remains single‐phase up to a temperature of 1200 °C, similarly to pure hydroxyapatite obtained by the same synthesis method.

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