Metallurgical and Materials Transactions A

, Volume 44, Issue 6, pp 2533–2538 | Cite as

Interfacial Free Energy of Cu-Co Solid Solutions

Article
First Online:

Abstract

The surface energies of Cu-Co solid solutions in hydrogen atmosphere were measured. The measurements were performed on pure copper and copper alloys containing 0.45, 0.7, 1.4, 2.25, 2.50, and 2.8 at. pct Co and 4.1 at. pct Co for the temperature range 1245 K to 1349 K (972 °C to 1076 °C). The experiments were conducted using the zero creep method for 18 mcm foils. The modified method allowed “in situ” determining of the surface energy. It was shown that the surface energy increases as the concentration increases up to 1.4 at. pct Co and then decreases. Such extreme behavior was obtained by the direct method for the first time in a solid metallic system.

Keywords

Surface Free Energy Threshold Stress Pure Copper Hydrogen Atmosphere Boundary Dislocation 
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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2013

Authors and Affiliations

  1. 1.Department of Physical ChemistryNational University of Science and Technology “MISIS”MoscowRussia

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