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Original Articles

A note on grain-boundary diffusion of chromium in niobium bicrystals

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Pages 281-285 | Published online: 20 Aug 2006
 

Abstract

The grain-boundary diffusion of Cr in Nb bicrystals with 8°[110]/[112] symmetrical tilt boundaries was measured in the temperature range 947–1150°C, using electron probe microanalysis. The dependence of the grain-boundary diffusion coefficient D' on temperature T is given by

with an activation energy of 42961 cal mol−1

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