The diffusive behavior of 185W was studied at 900 to 1250C. The results could be described by:

D (cm2/s) = 3.60 x 10-3 exp[-43.9(kcal/g-atom)/RT]

L.V.Pavlinov: Fizika Metallov i Metallovedenie, 1967, 24[2], 272-7