Unified approach for determining the enthalpic fictive temperature of glasses with arbitrary thermal history |
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Authors: | Xiaoju Guo Marcel Potuzak John C Mauro Douglas C Allan TJ Kiczenski Yuanzheng Yue |
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Institution: | 1. Science and Technology Division, Corning Incorporated, Corning, NY 14831, USA;2. Section of Chemistry, Aalborg University, DK-9000 Aalborg, Denmark;3. Key Laboratory for Glass & Ceramics, Shandong Polytechnic University, Jinan 250353, China |
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Abstract: | We propose a unified routine to determine the enthalpic fictive temperature of a glass with arbitrary thermal history under isobaric conditions. The technique is validated both experimentally and numerically using a novel approach for modeling of glass relaxation behavior. The technique is applicable to glasses of any thermal history, as proved through a series of numerical simulations where the enthalpic fictive temperature is precisely known within the model. Also, we demonstrate that the enthalpic fictive temperature of a glass can be determined at any calorimetric scan rate in excellent agreement with modeled values. |
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