Thermodynamics of Chemical and Electrochemical Stability of Brasse
A. G. Tyurin and A. A. Shrainer
Chelyabinsk State University, ul. Br. Kashirinykh 129, Chelyabinsk, 454021 Russia
Received April 19, 2006
Abstract — Based on the theory of “regular” solutions, the thermodynamic properties of 
-, 
-, 
-, 
-, and 
-phases of the Cu–Zn system are described. The surface activity of the elements in the phases is assessed. Potential–pH diagrams for the general system Cu
Zn
H2O and the manganese brass system H2O at 25
C are plotted. The nature of passivating films on conventional and special brasses and their composition are elucidated in different pH and potential ranges.
-, -, -, -, and -phases of the Cu–Zn system are described. The surface activity of the elements in the phases is assessed. Potential–pH diagrams for the general system CuZnH2O and the manganese brass system H2O at 25C are plotted. The nature of passivating films on conventional and special brasses and their composition are elucidated in different pH and potential ranges.
PACS numbers: 82.60.-s, 82.60.Hc
DOI: 10.1134/S0033173207030162