Question: Consider a copper nickel diffusion couple. After a 700-h heat treatment at 1100C, the concentration of Cu is 2.5 wt% at the 3 mm position

Consider a copper nickel diffusion couple. After a 700-h heat treatment at 1100C, the concentration of Cu is 2.5 wt% at the 3 mm position within the nickel. At what temperature should the diffusion couple be maintained to produce the same concentration (i.e. 2.5 wt% Cu) at a 2 mm position after 700h? Consider a copper nickel diffusion couple. After a 700-h heat treatment at

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