Both kinetic and thermodynamic factors influence the
stability of glasses in contact with SiC. Even reactions
that are thermodynamically feasible may not occur because
of slow kinetics. Reaction kinetics are often limited
by the transport of reactants and products in and out of
the interface region. Calculations also assume thermodynamic
equilibrium and that may not always be the case.
Reactions may result in alteration of the glass composition
at the joint interface and therefore its properties
(e.g., surface tension, viscosity, density) will be affected