Glass Formation and Growth in Solids

摘要: Traditionally, a glass is defined as an undercooled liquid brought below characteristic freezing temperature referred to the transition temperature, Tg. The formation of requires that process crystallization be bypassed during cooling through thermodynamic melting point Tm, and range nucleation growth crystals in melt involves atomic rearrangements which occur on time scale τx (T, P. C. Y.) depends T, pressure P, composition C, possible other less conventional parameters collectively labeled Y. Very roughly, region must take place τC such ≲ τX order achieve glassy state. Detailed theories lead specific criteria have been put forth by Turnbull others for case metallic liquids.(1)