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1 results

  • 12 - Melting

  • from Part III - Types of Phase Transformations
  • Brent Fultz, California Institute of Technology
  • Book:
    Phase Transitions in Materials
    Published online:
    24 April 2020
    Print publication:
    14 May 2020, pp 318-341

  • Summary

    Chapter 12 discusses the enthalpy and entropy of solid and liquid phases near the melting temperature Tm, and highlights rules of thumb, such as the tendency for the entropy of melting to be similar for different materials. Correlations between Tm and the amplitude of thermal displacements of atoms (“Lindemann rule”), and between Tm and the bulk modulus are presented, but these correlations are semiquantitative at best. Richard's rule for the entropy of melting is more robust. Interface behavior during melting is covered in more detail, including premelting. At a temperature well below Tm, a glass undergoes a type of melting called a “glass transition” which is discussed in more detail in this chapter.Some features of melting in two dimensions are described, which are quite different from melting in three dimensions.