Unformatted text preview: following phenomenological equations v v 1 1 µ ∇ − ∇ − = T L T L J A A AA A v vv v v 1 1 ∇ − ∇ − = T L T L J A A In general the vacancies are no in equilibrium, and hence v ≠ ∇ . Using the above two equations to show that , where A A A D x D v v = A A D is the selfdiffusion coefficient of A in pure A , is the vacancy diffusion coefficient in A , and x A D v v is the local mole fraction of vacancies in pure A...
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 Spring '02
 CHEN
 Thermodynamics, Atom, Steady State, Materials Processes Spring, initial atom fraction, local mole fraction

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