Extraordinary diffusion in Co/Cu grain boundaries. (May 2015)

• Record Type: Journal Article
• Authors: Nakano, Hiromi; Yuasa, Motohiro; Miyamoto, Hiroyuki; Miyazawa, Naoki; Mabuchi, Mamoru
• Is Part Of: Scripta materialia. Volume 101(2015)
• Page Start: 52
• Page End: 55
• Publication Date: 2015-05
• Subjects: Transmission electron microscopy (TEM) -- Grain boundaries -- Diffusion -- First-principle calculation -- Co–Cu alloy; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.01.017
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract : Usually, Cu atoms hardly diffuse in Co because of the very low solid solubility limit. However, this letter shows by transmission electron microscopy that extraordinary diffusion of Cu in the Co phase occurred in Co/Cu bicrystal fabricated by diffusion joining and that many dislocations were found in the Co phase. First-principles calculations suggested that the extraordinary diffusion of Cu in Co is related to the movement of dislocations which Cu atoms adhere to.