Diffusion of Silver into Nickel Single Crystals

Abstract
Lattice diffusion of radioactove silver Ag110 into high‐purity nickel single crystals is measured over the temperature range 507–782°C. The lattice diffusion coefficient (DL)Ag/Ni, obtained by Gruzin's residual activity method, is given by (DL)Ag/Ni=0.025 exp(−47 200/RT) cm2/sec. The activation energy QAg/Ni=47 200 cal/mole for silver diffusion in nickel is much smaller than QNi/Ni for self‐diffusion in nickel (66 800 cal/mole) but is about equal to QAg/Ag for self‐diffusion in silver (46 000 cal/mole.

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