The temperature dependence of the diffusivity of 51Cr, at temperatures ranging from 1420 to 1870K (table 256), was found to be essentially linear; with a least-squares expression of the form:

D (cm2/s) = 100 exp[-377.8(kJ/mol)/RT]

Published data for the temperature range of 1173 to 1473K could be described by:

D (cm2/s) = 0.0095 exp[-270.3(kJ/mol)/RT]

Both sets of data could be described by a continuous curve:

D (cm2/s) = 90 exp[-288.5(kJ/mol)/RT] + 0.00001 exp[-257.8(kJ/mol)/RT]

Overall, the diffusivity of Cr was similar to that of V.

J.Pelleg: Philosophical Magazine A, 1995, 71[2], 431-9

Table 256

Diffusivity of 51Cr in V