RADIATION EFFECTS IN PHYSICAL AGING OF BINARY As-S AND As-Se GLASSES

Journal Article · Mon Jan 24 04:00:00 EST 2011 · Journal of Thermal Analysis and Calorimetry

DOI:https://doi.org/10.1007/s10973-010-0876-8· OSTI ID:1009718

Golovchak, Roman; Shpotyuk, O.; Kozdras, A.; Riley, Brian J.; Sundaram, S. K.; McCloy, John S.

Radiation-induced physical aging effects are studied in binary AsxS100-x and AsxSe100-x (30 ≤ x ≤ 42) glasses by conventional differential scanning calorimetry (DSC) method. It is shown that γ-irradiation (Co60 source, ~ 3 MGy dose) of glassy AsxS100-x caused a measurable increase in glass transition temperature and endothermic peak area in the vicinity of glass transition region, which was associated with acceleration of structural relaxation processes in these materials. In contrast to sulfide glasses, the samples of As-Se family did not exhibit any significant changes in DSC curves after γ-irradiation. The observed difference in radiation-induced physical aging between sulfides and selenides was explained by more effective destruction-polymerization transformations and possible metastable defects formation in S-based glassy network.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1009718
• Report Number(s): PNNL-SA-72887; NN2001000
• Journal Information: Journal of Thermal Analysis and Calorimetry, Journal Name: Journal of Thermal Analysis and Calorimetry Journal Issue: 1 Vol. 103; ISSN 1388-6150
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AGING
ARSENIC SELENIDES
ARSENIC SULFIDES
CALORIMETRY
DEFECTS
GAMMA RADIATION
GLASS
PHASE TRANSFORMATIONS
RADIATION EFFECTS
TRANSITION TEMPERATURE