Phase transformation and microstructure of wollastonite glass–ceramics in Na<sub>2</sub>O–CaO–SiO<sub>2</sub> system under different heat treatment conditions

Yao, Shu Yu; Cao, Hua; Wang, P.; Zhang, W. W.; Huo, Wenlong; Xu, Wei

doi:10.1179/1432891714z.000000000763

Cited by 2 publications

(1 citation statement)

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“…The different orientations for the observed patterns are probably linked to the grains' different orientations (polycrystalline phases). For the 2 hs heat-treated sample (Figure 6a and 6a'), it is possible to observe lighter regions (white arrows), probably related to the segregation of the wollastonite phase 61 . The 4 hs (Figure 6b and 6b') and 6 hs (Figures 6c and 6c') samples are more similar to each other.…”

Section: Resultsmentioning

confidence: 96%

Crystallization Kinetics and Structure Refinement of CaTiO3 Glass-Ceramics Produced by Melt-Quenching Technique

et al. 2021

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Glass-ceramic materials were obtained by heat treatment (960 ºC for 2, 4, and 6 hs) of glasses with CaCO 3 47.50 wt%-TiO 2 23.75 wt%-SiO 2 23.75-Al 2 O 3 5.00 wt% formulation produced by the melt-quenching technique (melting at 1650 ºC and subsequent annealing at 650 ºC). The materials' structural characterization and crystallization kinetics (Kissinger method) indicate the presence of CaTiO 3 , CaSiO 3, and CaTiSiO 5 crystalline phases with activation energies 217, 281, and 446 kJ/mol, respectively. The structure refinement (Rietveld method) suggests metastability for the CaSiO 3 and CaTiSiO 5 phases as a function of the heat treatment time. The increase in time favors CaTiO 3 crystallization, from 62.97 wt%, in the 2 hs treated sample, to 79.21 wt%, in the 6 hs treated sample. EDS and microstructure analyses confirm the glass-ceramic production and indicate segregation of the CaTiO 3 phase for longer heat treatment times.

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Section: Resultsmentioning

confidence: 96%

Crystallization Kinetics and Structure Refinement of CaTiO3 Glass-Ceramics Produced by Melt-Quenching Technique

et al. 2021

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Investigation of sintering, crystallization and mechanical properties of silver nanoparticles-reinforced wollastonite glass-ceramic

Dehghan

Alizadeh

Soltani

2021

Journal of Non-Crystalline Solids

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Phase transformation and microstructure of wollastonite glass–ceramics in Na₂O–CaO–SiO₂ system under different heat treatment conditions

Cited by 2 publications

References 15 publications

Crystallization Kinetics and Structure Refinement of CaTiO3 Glass-Ceramics Produced by Melt-Quenching Technique

Crystallization Kinetics and Structure Refinement of CaTiO3 Glass-Ceramics Produced by Melt-Quenching Technique

Investigation of sintering, crystallization and mechanical properties of silver nanoparticles-reinforced wollastonite glass-ceramic

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Phase transformation and microstructure of wollastonite glass–ceramics in Na2O–CaO–SiO2 system under different heat treatment conditions

Cited by 2 publications

References 15 publications

Crystallization Kinetics and Structure Refinement of CaTiO3 Glass-Ceramics Produced by Melt-Quenching Technique

Crystallization Kinetics and Structure Refinement of CaTiO3 Glass-Ceramics Produced by Melt-Quenching Technique

Investigation of sintering, crystallization and mechanical properties of silver nanoparticles-reinforced wollastonite glass-ceramic

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Phase transformation and microstructure of wollastonite glass–ceramics in Na₂O–CaO–SiO₂ system under different heat treatment conditions