  We simulate the sintering of particle aggregates due to surface diffusion. As
a method we use Kinetic Monte-Carlo simulations in which elasticity can
explicitly be taken into account. Therefore it is possible to investigate the
shape relaxation of aggregates also under the influence of an external
pressure. Without elasticity we investigate the relaxation time and surface
evolution of sintering aggregates and compare the simulations with the
classical Koch-Friedlander theory. Deviations from the theoretical predictions
will be discussed.
