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Horang, Cohen and Averbach measured the diffusion coefficient of Ni in ferromagnetic alpha-Fe and obtained the following data (see graph) and fitted line: 1/T (1/6)
Horang, Cohen and Averbach measured the diffusion coefficient of Ni in ferromagnetic alpha-Fe and obtained the following data (see graph) and fitted line: 1/T (1/6) -25.0 9.50E-04 1.00E-03 1.05E-03 1.10-03 1.15E-03 1.20E-03 -26.0 -27.0 -28.0 -29.0 Ln(D) =-32640*1/T+3.79 In D Din cm2s 1 -30.0 -31.0 -32.0 -33.0 -34.0 -35.0 a) Does the diffusion coefficient exhibit Arrhenius/ thermally activated behavior? Explain. b) What is the physical meaning of the intercept? c) What is the physical meaning of the slope? d) Estimate the lowest temperature at which data was taken e) Estimate the highest temperature at which data was taken. f) What is D at 700 C
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