Surface diffusion coefficients were deduced from measurements of neck size and neck curvature during the sintering of a pair of spheres. The spheres were machined from single crystals. The results could be described by:

D (m3/s) = 0.015 exp[-518.7(kJ/mol)/RT]

P.Sajgalik, Z.Panek, M.Uhrik: Journal of Materials Science, 1997, 22[12], 4460-4