(a) Rewrite the expression for the total free energy change for nucleation (Equation 10.1) for the case...
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(a) Rewrite the expression for the total free energy change for nucleation (Equation 10.1) for the case of a cubic nucleus of edge length a (instead of a sphere of radius r). Now differentiate this expression with respect to a (per Equation 10.2) and solve for both the critical cube edge length, a*, and also ?G*.
(b) Is ?G* greater for a cube or a sphere? Why?
Transcribed Image Text:
AG = ar AG, + 4mry (10.1) %3! d(AG) dr = rAG,(3) + 4y(2r) = 0 (10.2)
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Related Book For
Fundamentals of Materials Science and Engineering An Integrated Approach
ISBN: 978-1118061602
4th Edition
Authors: David G. Rethwisch
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