Аннотация: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.