Derive Eq. (17.8): C s = k C 0 (1 - X) k - 1 , where:
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Derive Eq. (17.8): Cs = kC0(1 - X)k - 1, where:
Cs = impurity concentration in the solid
C0 = original impurity concentration in the melt
k = segregation coefficient
X = fraction of the melt that has solidified
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