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Static and Dynamic Thermal Properties of a Pd40Ni40Si20 Glassy Alloy

1
Institute of Metal Science, Equipment and Technologies “Acad. A. Balevski”, BAS, 67 Shipchenski prohod str., 1574 Sofia, Bulgaria
2
Faculty of Chemistry and Pharmacy, University of Sofia “St.Kl.Ohridski”, 1 James Bourchier str., 1164 Sofia, Bulgaria
3
Department of Physics, King Abdulaziz University, Jeddah 22254, Saudi Arabia
4
International Institute for Green Materials, Josai International University, Togane 2838555, Japan
*
Author to whom correspondence should be addressed.
Metals 2019, 9(11), 1157; https://doi.org/10.3390/met9111157
Received: 28 September 2019 / Revised: 24 October 2019 / Accepted: 25 October 2019 / Published: 28 October 2019
The thermal properties of a Pd40Ni40Si20 glassy alloy with the largest supercooled liquid region among the glassy alloys containing Si as a metalloid element are studied using static and dynamic measurement methods. The relatively wide supercooled liquid region of 45 K, defined by the temperature interval between the glass transition temperature (Tg) and the onset temperature of crystallization (Tx), and the viscosity of the supercooled liquid, varying from 2.7 × 1010 to 3.2 × 1011 Pa·s, make this glass suitable for the introduction of controlled pores by a viscous flow in the temperature range Tg~Tx. The obtained activation energy for crystallization, 272 ± 19 kJ/mol, is slightly higher than that of Tg (228 ± 11 kJ/mol), indicating the dominant contribution of the atomic transport barrier in the overall energy barrier for crystallization. View Full-Text
Keywords: melt spinning; differential scanning calorimetry (DSC); metallic glass; crystallization; viscosity melt spinning; differential scanning calorimetry (DSC); metallic glass; crystallization; viscosity
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MDPI and ACS Style

Drenchev, L.; Spassov, T.; Stefanov, G.; Inoue, A.; Gyurov, S. Static and Dynamic Thermal Properties of a Pd40Ni40Si20 Glassy Alloy. Metals 2019, 9, 1157.

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