In a carbunizing process, an initially 0 2% C steel gear is placed in an atmosphere that provides 1 3% C at the surface of the steel at 1000'C. How long does it take to reach a 0.45% C at a depth of 02 cm below the surface? The preexponential and activation energy are Do = 2.3 x 10 5 mis and Qa = 148000 Jimol diffusion of C in FCC Fe at this temperature. Oa 30.2 hours Ob 196 hours Oc 645 hours Od 71 hours O e 29 hours
In a carbunizing process, an initially 0 2% C steel gear is placed in an atmosphere that provides 1 3% C at the surface of the steel at 1000'C. How long does it take to reach a 0.45% C at a depth of 02 cm below the surface? The preexponential and activation energy are Do = 2.3 x 10 5 mis and Qa = 148000 Jimol diffusion of C in FCC Fe at this temperature. Oa 30.2 hours Ob 196 hours Oc 645 hours Od 71 hours O e 29 hours
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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