Abstract
Through alloy sampling approach, phase equilibria in the Cu-Co-Zr ternary system have been determined. Based on the phases identified with electron probe microanalysis and x-ray diffraction, isothermal sections at both 873 and 1200 K were constructed. No ternary compound was detected. It is evident that remarkable ternary solubility occurs in almost all binary intermetallic phases at both temperatures. For instance, solubility of Co in Cu51Zr14 can be up to 17.6 and 27.5 at.% at 873 and 1200 K, respectively. Besides, continuous dissolution between CuZr and CoZr at 1200 K was observed, and the maximum content of Cu in CoZr at 873 K reaches to 42.5 at.%.
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