Reduced Glass Transition Temperature - Practical Electron Microscopy and Database - - An Online Book - |
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Microanalysis | EM Book https://www.globalsino.com/EM/ | ||||||||
This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers. | ||||||||
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Reduced glass transition temperature, Trg, is the ratio of the glass transition temperature Tg to the melting temperature Tm of an alloy. In general, higher reduced glass transition temperature improves the glass-forming ability. Figure 3068 shows the critical cooling rate (Rc) and critical casting thickness (dc) for formation of various metallic glass alloys from melts as a function of reduced glass transition temperature (Trg). In general, as the reduced glass transition temperature increases, the required cooling rate for glass formation decreases, and thus it is possible to form thicker glasses at slower cooling rates.
Figure 3068. Critical cooling rate and critical casting thickness for formation of various metallic glass alloys from melts as a function of reduced glass transition temperature.
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