Carbon diffusion in copper-based metal matrix composites

✍ Scribed by Simon Dorfman; David Fuks

• Book ID: 103959755
• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 258 KB
• Volume: 51
• Category: Article
• ISSN: 0924-4247
• DOI: 10.1016/0924-4247(95)01062-9

✦ Synopsis

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 (\mathrm{Cu}-\mathrm{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 (\mathrm{Cu}-\mathrm{C}) alloy.