Possible deviation from Arrhenius b

Possible deviation from Arrhenius behavior. One assumption under this work and many conventional sintering kinetic studies is the temperature dependence of the rate process. As in many diffusional and chemical processes hold to Boltzmann statistical thermodynamics or Arrhenius controlled rates,41 with its homologous temperature (T/Tm) even lower than 0.142 and non-equilibrium chemical dynamics,43 there is the possible deviation from Arrhenius limit, as also outlined by Eyring and others.44–46 One of the most well known is the Vogel–Fulcher–Tammann equation describing temperature dependence of glass viscous behavior. 47 The importance of reminding ourselves on such departures, is the fact that the relative magnitudes of the activations energies would change. Overall, more extensive data across more material system is required to consider the nature of the physiochemical mechanisms for the cold sintering.