Carbon diffusion in copper-based metal matrix composites Academic Article uri icon


  • The heights of diffusion barriers for copper-based composite materials with carbon whiskers or fibers are calculated. It is shown that the alloying of the matrix by an additional element, substituting copper in an interstitial Cu-C solid solution changes the value of the barrier and the migration entropy. These substitutional impurities significantly influence the diffusivity of carbon in the copper matrix. Zirconium is predicted as the best alloying element for preventing the diffusion of carbon in Cu-C alloy.

publication date

  • October 1, 1995