The migration of 59Fe into 18Cr-10wt%Ni samples of 3N-purity, or samples doped with 0.007wt%S, was investigated at 700 to 1050C (table 89) by using the Suzuoka method. It was found that the presence of S increased the true diffusion kinetics of Fe. It was concluded that segregation led to the precipitation of compounds of Cr and S at the grain

The migration of 59Fe into 18Cr-10wt%Ni samples of 3N-purity, or samples doped with 0.007wt%S, was investigated at 700 to 1050C (table 89) by using the Suzuoka method. It was found that the presence of S increased the true diffusion kinetics of Fe. It was concluded that segregation led to the precipitation of compounds of Cr and S at the grain

boundaries. The true diffusion kinetics of Fe were faster at precipitate/matrix interface boundaries than along boundaries drained of S.

D.Juve-Duc, D.Treheux: Acta Metallurgica, 1984, 32[11], 2063-8

Table 89

Grain Boundary Diffusion Parameters for Fe-18Cr-10Ni