Abstract
The aim of this work is to identify the wetting of refractory metals with copper alloys. We investigated the effect of chromium (0; 0.12; 0.24; 0.61 and 1.22 at.%) in Cu-Cr alloys and Cu-Cr-Zr (0.85 at.% Cr, 0.20 at.% Zr, balance Cu) on wetting of pure molybdenum, molybdenum alloy (1.0 at.%Ti, 0.08 at.%Zr, – TZM) and tungsten. Only the binary alloys with the lowest Cr concentration (0.12 – 0.61 at.%) effectively wet refractory substrates.

Key words
wetting, copper alloys, refractory metals, microstructure

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