Compositional dependence of fragility and glass forming ability of calcium aluminosilicate melts

Moesgaard, Mette; Yue, Yuanzheng

doi:10.1016/j.jnoncrysol.2009.04.004

Cited by 35 publications

(36 citation statements)

References 35 publications

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“…It has been found that GFA and kinetic fragility have an inverse correlation for some glass-forming systems [23,24]. Here the question is whether this inverse relation exists for the soda lime borate liquid series.…”

Section: Resultsmentioning

confidence: 95%

“…No crystallization peak is observed for the three glasses with x = 5, 10, and 15 during dynamic heating at 20 K/min and therefore K H cannot be calculated for those glasses. This implies that these compositions have higher glass stability than the other compositions [24]. The determined values of T g , T c , and T m and the Hruby parameter K H [12] are stated in Table 1.…”

Section: Resultsmentioning

confidence: 95%

“…An inverse correlation between fragility and GFA has been found for various metallic glasses [24,40], and hence fragility can be used as a quantitative measure of GFA for those systems. However, we find that this is not the case for these soda lime borate compositions.…”

Section: Relationship Between Fragility and Gfamentioning

confidence: 95%

“…An inverse correlation between fragility index and GFA has been found for various metallic glass-forming liquids in addition to some silicate liquids [23,24]. "Strong" melts have a more consistently rigid structure upon temperature changes compared to "fragile" melts.…”

Section: Introductionmentioning

confidence: 98%

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Glass-forming ability of soda lime borate liquids

Zheng

Mauro

Smedskjær

et al. 2012

Journal of Non-Crystalline Solids

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We investigate the composition dependence of glass-forming ability (GFA) of a series of iron-containing soda lime borate liquids by substituting Na 2 O for B 2 O 3 . We have characterized GFA by measuring the glass stability against crystallization using a differential scanning calorimeter (DSC). The results show that the GFA decreases when substituting Na 2 O for B 2 O 3 . Moreover, we find that there is no direct link between the kinetic fragility and GFA for the soda lime borate series studied herein. We have also discovered and clarified a striking thermal history dependence of the glass stability against crystallization. In particular, the two glasses containing 20 and 25 Na 2 O mol% do not exhibit crystallization exotherms during the second DSC upscan at 10 and 20 K/min following prior slow (10 and 20 K/min) downscans. This indicates that the glass stability of these compositions can be enhanced by cooling their melts to the glassy state slowly, before any reheating. We explain this phenomenon in terms of the thermal history dependence of boron speciation.

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 95%

Section: Relationship Between Fragility and Gfamentioning

confidence: 95%

Section: Introductionmentioning

confidence: 98%

See 2 more Smart Citations

Glass-forming ability of soda lime borate liquids

Zheng

Mauro

Smedskjær

et al. 2012

Journal of Non-Crystalline Solids

Self Cite

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“…Since Turnbull showed through the analysis of crystallization kinetics that higher viscosity liquids may have better GFA [23], it was experimentally proved by several recent works [16,36,37], and extended to the correlation investigation between the GFA liquid fragility index, m [31,38,39]. In particular, Senkov proposed a GFA parameter F 1 [=2m/m min (T rg − 1) + 2] − 1 ], which is a function of m and T rg , and it describes extremely well GFA of a wide range of metallic and non-metallic alloys.…”

Section: Alloysmentioning

confidence: 99%

Investigation of glass forming ability in Ce–Al–Ni alloys

Tang

Pan

et al. 2012

Journal of Non-Crystalline Solids

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a b s t r a c tThe compositional dependence of the glass forming ability (GFA), the correlation between their GFA and the GFA related parameters, and the thermal stability of the Ce-Al-Ni alloys were investigated. Rapidly quenched Ce 65 Al x Ni 35 − x (x = 2, 5, 10, 17, 20) and Ce 70 Al x Ni 30 − x (x = 2, 5, 10, 15, 20) ribbons were prepared by melt spinning, and their phase transformations were studied by X-ray diffraction (XRD), transmission electron microscopy (TEM) and differential scanning calorimetry (DSC). The experimental results indicated that the GFA of Ce 65 Al x Ni 35 − x (x = 2, 5, 10, 17, 20) and Ce 70 Al x Ni 30 − x (x = 2, 5, 10, 15, 20) alloys increased firstly and then decreased with the increasing of the Al content up to 20 at.%, respectively. It was found that only one parameter, F 1 , in evaluated currently available empirical GFA parameters searching for metallic glasses with a good GFA, can reflect the GFA of the Ce-Al-Ni alloys. It was indicated that the thermal stability of alloy with fully amorphous maybe lower than that of alloy with partial amorphous.

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Pressureless Crystallization of Glass for Transparent Nanoceramics

et al. 2019

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Transparent nanoceramics embedded with highly dense crystalline domains are promising for applications in missile guidance, infrared night vision, and laser and nuclear radiation detection. Unfortunately, current nanoceramics are strictly constrained by the stringent construction procedures such as super‐high pressure and containerless processing. Here, a pressureless crystallization engineering strategy in glass for elaboration of transparent nanoceramics and fibers is proposed and experimentally demonstrated. By intentional creation of a sharp contrast between nucleation and growth rates, the crystal growth rate during glass crystallization can be significantly suppressed. Importantly, this unique phase‐transition habit enables the achievement of transparent nanoceramics and even smooth fibers with extremely tiny crystalline size (≈20 nm) and high crystallinity (≈97%) under atmospheric pressure. This allows the generation of an attractive nonlinear optical response such as dynamic optical filtering and luminescence in the mid‐infrared waveband of 4300–4950 nm. These findings highlight that the strategy to switch the phase‐transition habit of glass into the unconventional crystallization regime may provide new opportunities for the creation of next‐generation nanoceramics and fibers.

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Compositional dependence of fragility and glass forming ability of calcium aluminosilicate melts

Cited by 35 publications

References 35 publications

Glass-forming ability of soda lime borate liquids

Glass-forming ability of soda lime borate liquids

Investigation of glass forming ability in Ce–Al–Ni alloys

Pressureless Crystallization of Glass for Transparent Nanoceramics

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