On the bulk glass formation in the ternary Pd-Ni-S system

Kuball, Alexander; Bochtler, Benedikt; Gross, Oliver; Pacheco, Victor; Stolpe, Moritz; Hechler, Simon; Busch, Ralf

doi:10.1016/j.actamat.2018.07.039

Cited by 32 publications

(15 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The alloys are held at this temperature for at least 6 h. If the overall mass loss during the complete alloying process is attributed to the loss of P, a maximum deviation of 0.5 at% P is estimated. In general, the preparation process is similar to the one of S-containing BMGs, described in detail in references 55,56 . Amorphous samples are produced from the purified alloys by casting them in water cooled copper molds using a custom build suction casting device.…”

Section: Methodsmentioning

confidence: 99%

Signatures of structural differences in Pt–P- and Pd–P-based bulk glass-forming liquids

et al. 2019

Self Cite

View full text Add to dashboard Cite

The structural differences between the compositionally related Pt-P-and Pd-P-based bulk glass-forming liquids are investigated in synchrotron X-ray scattering experiments. Although Pt and Pd are considered to be topologically equivalent in structural models, we show that drastic changes in the total structure factor and in the reduced pair distribution function are observed upon gradual substitution. These variations indicate the existence of significant structural differences on the short-(SRO) and medium-range order (MRO) length scale. The structural data suggest that the distribution of the dominant polyhedra and the distribution of their connection schemes gradually change from Pt-P-to Pd-P-based alloys, which is likely connected to the different sensitivities to annealing or cooling rate induced embrittlement. The evolution of the total structure factor and the reduced pair distribution function with increasing temperature indicate the (partial) dissolution of both, the MRO and the SRO, which reflects the thermodynamic properties of the liquids.

show abstract

Section: Methodsmentioning

confidence: 99%

Signatures of structural differences in Pt–P- and Pd–P-based bulk glass-forming liquids

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…To produce the Pd-Ni-S master alloys the raw elements Pd (99.999 wt.%), Ni (99.95 wt.%) and S (99.9995 wt.%) were inductively melted in silica tubes under a high purity Aratmosphere [13]. Subsequently, the alloys were remelted and fluxed in dehydrated B 2 O 3 in order to remove oxide impurities [13].…”

Section: Methodsmentioning

confidence: 99%

Ni self-diffusion in glass forming Pd–Ni–S melts

Wilden

Yang

Günther

et al. 2021

J. Phys.: Condens. Matter

Self Cite

View full text Add to dashboard Cite

The Ni self-diffusion in glass forming Pd40Ni40S20, Pd37Ni37S26 and Pd31Ni42S27 melts was probed by incoherent, quasielastic neutron scattering over a temperature range between 773 and 1023 K. The Ni self-diffusion coefficients are on a 10−10 m2 s−1–10−9 m2 s−1 scale and barely change with composition. Each composition exhibits an Arrhenius-type temperature dependence of the Ni self-diffusion coefficients, which results in activation energies ranging from E A = 348 ± 16 meV for Pd40Ni40S20 to E A = 387 ± 6 meV for Pd37Ni37S26. The structural relaxation shows a stretched exponential behavior even far above the liquidus temperatures. In addition, the viscosity of the Pd37Ni37S26 melt was measured under reduced gravity conditions. The diffusion calculated from the viscosity reveals a significant deviation from the measured Ni self-diffusion by a factor between 4 and 8. This may indicate a dynamic decoupling between the atoms within the Pd–Ni–S equilibrium melts.

show abstract

“…Within the recent data‐driven modeling paradigm of materials development, a long‐standing problem is to understand how the GFA correlates with properties that can be more easily measured or calculated from the chemical composition. It is thus highly desirable to predict (rather than measure) the GFA for the quest and design of novel vitrificable compositions . Therefore, the aim of this work is to develop and test a new parameter that can predict the GFA.…”

Section: Introductionmentioning

confidence: 99%

“…It is thus highly desirable to predict (rather than measure) the GFA for the quest and design of novel vitrificable compositions. [34][35][36] Therefore, the aim of this work is to develop and test a new parameter that can predict the GFA.…”

Section: Introductionmentioning

confidence: 99%

Viscosity and liquidus‐based predictor of glass‐forming ability of oxide glasses

et al. 2019

View full text Add to dashboard Cite

Glass‐forming ability (GFA) is a measure of the easiness to vitrify a given substance. Theoretically, it is possible to make a glass from any liquid provided it is quenched from its liquidus temperature with a cooling rate above a critical value Rc to avoid crystallization. However, measuring GFA is a laborious and time‐consuming task. Moreover, predicting the GFA of substances that have never been vitrified is of greater interest. Here, we propose and evaluate a new parameter that can predict the glass forming ability of oxide mixtures. We derived a mother parameter, GFA = 1/Rc ∝ [U(Tmax) × TL]−1, where U(Tmax) is the maximum crystal growth rate, and TL is the liquidus temperature, which strongly correlates with the experimental critical cooling rates of oxide glass‐formers. A simplified version derived from the mother parameter—which does not need (scarce) crystal growth rate data and only relies on viscosity η and TL, GFA ∝ [η(TL)/TL2]—also correlates well with the Rc of several oxide compositions. This new GFA parameter, dubbed Jezica, works when heterogeneous nucleation prevails. It corroborates the widespread concept that substances having high viscosity at TL, and a low TL can be easily vitrified, and provides a powerful tool for the quest and design of novel glasses.

show abstract

On the bulk glass formation in the ternary Pd-Ni-S system

Cited by 32 publications

References 56 publications

Signatures of structural differences in Pt–P- and Pd–P-based bulk glass-forming liquids

Signatures of structural differences in Pt–P- and Pd–P-based bulk glass-forming liquids

Ni self-diffusion in glass forming Pd–Ni–S melts

Viscosity and liquidus‐based predictor of glass‐forming ability of oxide glasses

Contact Info

Product

Resources

About