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Rejuvenation of a Metallic and Oxide Glass by Cooling from the Supercooled Liquid State at Laboratory Rates
Author(s) -
Afonin Gennadii V.,
Kobelev Nikolai P.,
Khonik Vitaly A.,
Nemilov Sergei V.
Publication year - 2018
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201800167
Subject(s) - supercooling , thermodynamics , relaxation (psychology) , glass transition , enthalpy , materials science , oxide , metallurgy , composite material , physics , polymer , psychology , social psychology
Calorimetric study of relaxation and rejuvenation of PdNiP and SiO 2 ‐based glasses by cooling from the supercooled liquid state at laboratory rates is performed. For the former glass, cooling at the highest rate of 54 K min −1 recovers 34–36% of the enthalpy released upon relaxation. The interplay between relaxation and rejuvenation leads to a dependence of the heat absorption peak above the glass transition temperature T g on the cooling rate. The oxide glass displays a similar effect with analogous dependence on the cooling rate. Qualitative explanations for the observed phenomena are presented.