A thin film of Co was deposited on the end of a long cylinder of Fe3O4. Afterwards, the cylinder was annealed for 20 hours and then the Co concentration was measured. The Co concentration values are given in the table. Calculate the diffusion coefficient of Co in Fe3O4 at the annealing conditions. x (um) C(x,t) (mol/cm³) 7.78x10-4 20 40 7.33x10-4 60 6.64x10-4 80 5.78x10-4

A thin film of Co was deposited on the end of a long cylinder of Fe3O4. Afterwards, the cylinder was annealed for 20 hours and then the Co concentration was measured. The Co concentration values are given in the table. Calculate the diffusion coefficient of Co in Fe3O4 at the annealing conditions. x (um) C(x,t) (mol/cm³) 7.78x10-4 20 40 7.33x10-4 60 6.64x10-4 80 5.78x10-4

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter22: Surfaces

Section: Chapter Questions

Problem 22.46E: Early attempts to coat metals with Teflon, poly tetrafluoroethylene, resulted in a polymer layer...

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