Lattice and Grain Boundary Self-Diffusion in Silver

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  • R. E. Hoffman
    General Electric Research Laboratory, Schenectady, New York
  • D. Turnbull
    General Electric Research Laboratory, Schenectady, New York

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Abstract

<jats:p>The lattice and grain boundary self-diffusion coefficients of high purity silver have been measured over extended temperature ranges. It has been found that the lattice diffusion coefficients are described by the equation, DL=0.895 exp(−49500/RT) cm2 sec−1 and are independent of the thermal history of the crystals within wide limits. The absolute grain boundary diffusion coefficients fit the equation, DB=0.03 exp(−20,200/RT) cm2 sec−1 and are independent of the grain size of the specimens.</jats:p>

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