Find the frequency factor of the following grain boundary diffusion, if the activation energy is given as 90KJ/mol and the diffusivity at the grain boundary at 1071K is given as 49*10-6m2/sec?

Find the frequency factor of the following grain boundary diffusion,

1.	Find the frequency factor of the following grain boundary diffusion, if the activation energy is given as 90KJ/mol and the diffusivity at the grain boundary at 1071K is given as 49*10-6m2/sec?
A.	1.2mm2/sec
B.	1.2m2/sec
C.	2.2mm2/sec
D.	4.2mm2/sec
Answer» B. 1.2m2/sec

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Find the frequency factor of the following grain boundary diffusion, if the activation energy is given as 90KJ/mol and the diffusivity at the grain boundary at 1071K is given as 49*10-6m2/sec?

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