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Influence of Ta2O5 doping on mechanical and biological properties of silicate glass-ceramics


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Fig. 1

The DSC thermogram of tantalum based glassceramics showing crystallization temperature (Tc).
The DSC thermogram of tantalum based glassceramics showing crystallization temperature (Tc).

Fig. 2

Comparative X-ray diffraction patterns of (a) Ta0, (b) Ta0.1, (c) Ta0.5, (d) Ta1, (e)
Comparative X-ray diffraction patterns of (a) Ta0, (b) Ta0.1, (c) Ta0.5, (d) Ta1, (e)

Fig. 3

Change in crystallite size with Ta2O5 concentration using Scherer’s formula.
Change in crystallite size with Ta2O5 concentration using Scherer’s formula.

Fig. 4

SEM micrographs of surfaces of glass-ceramics (a) Ta0, (b) Ta0.1, (c) Ta0.5, (d) Ta1 and (e) Ta3, respectively.
SEM micrographs of surfaces of glass-ceramics (a) Ta0, (b) Ta0.1, (c) Ta0.5, (d) Ta1 and (e) Ta3, respectively.

Fig. 5

The variation of grain size and porosity with change in Ta2O5 concentration (mol%).
The variation of grain size and porosity with change in Ta2O5 concentration (mol%).

Fig. 6

Apparent density and compressive strength as function of Ta2O5 concentration in mol%.
Apparent density and compressive strength as function of Ta2O5 concentration in mol%.

Fig. 7

The XRD patterns for (a) Ta0, (b) TA0.1, (c) Ta0.5, (d) Ta1 and (e) Ta3 glass-ceramics after 30-day immersion in Stimulated Body Fluid (SBF).
The XRD patterns for (a) Ta0, (b) TA0.1, (c) Ta0.5, (d) Ta1 and (e) Ta3 glass-ceramics after 30-day immersion in Stimulated Body Fluid (SBF).

Fig. 8

SEM-EDX micrographs of surfaces of glassceramics (a) Ta0, (b) Ta0.1, (c) Ta0.5, (d) Ta1 and (e) Ta3 after soaking in SBF for 30 days.
SEM-EDX micrographs of surfaces of glassceramics (a) Ta0, (b) Ta0.1, (c) Ta0.5, (d) Ta1 and (e) Ta3 after soaking in SBF for 30 days.

Glass transition temperature Tg and crystallization temperature Tc.

Sample IDChemical composition (mol%)Glass transition temperature [Tg] °CCrystallization temperature [Tc] °C
Ta046.1SiO2–0Ta2O5–26.9CaO–24.4Na2O–2.6P2O5546.9837.7
Ta01 46.0SiO2–0.1Ta2O5–26.9CaO–24.4Na2O–2.6P2O5540.1824.6
Ta05 45.6SiO2–0.5Ta2O5–26.9CaO–24.4Na2O–2.6P2O5506.8818.9
Ta145.1SiO2–1Ta2O5–26.9CaO–24.4Na2O–2.6P2O5449.4763.1
Ta343.1SiO2–3Ta2O5–26.9CaO–24.4Na2O–2.6P2O5312.4709.6
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Sprache:
Englisch
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Materialwissenschaft, andere, Nanomaterialien, Funktionelle und Intelligente Materialien, Charakterisierung und Eigenschaften von Materialien