Study of Chemical Dissolution of Cu98Be Alloy in Solutions Based on FeCl3

Larin, V., Egorova, L. (2018). Study of Chemical Dissolution of Cu98Be Alloy in Solutions Based on FeCl3. French-Ukrainian Journal of Chemistry, 6(1), 82–91. https://doi.org/10.17721/fujcV6I1P82-91

Process of chemical dissolution of beryllium bronze in various electrolytes was studied. Taking into account complex formation processes during chemical etching in solutions based on FeCl3 the ionization rate and selectivity of dissolution of Cu98Be alloy components was determined. It was shown that uniform and high rated chemical dissolution of beryllium bronze is possible in acidic medium in presence of Fe3+  ion-oxidizer and chlorine ions. An optimal etching solution composition was proposed. The surface morphology of the beryllium bronze electrode after etching in the investigated solutions was studied. An absence of passivation on the alloy Cu98Be surface was shown and salt and oxide nature of the grains of compounds formed on the electrode surface after chemical etching was proved.