Corrosion Behavior of α,β’-Brass in NaNO3 Solutions | Zendy

Clément Berne | Zendy; Éric Andrieu | Zendy; J. Reby | Zendy; Jean-Michel Sobrino | Zendy; Christine Blanc | Zendy

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Corrosion Behavior of α,β’-Brass in NaNO₃ Solutions

Author(s) -

Clément Berne,

Éric Andrieu,

J. Reby,

Jean-Michel Sobrino,

Christine Blanc

Publication year - 2015

Publication title -

ecs transactions

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.235

H-Index - 52

eISSN - 1938-6737

pISSN - 1938-5862

DOI - 10.1149/06426.0111ecst

Subject(s) - corrosion , brass , galvanic cell , materials science , anode , alloy , metallurgy , coupling (piping) , galvanic corrosion , phase (matter) , passivity , chemistry , electrode , copper , electrical engineering , organic chemistry , engineering

The corrosion behavior of an α,β'-brass CuZn40Pb2 (CW617N) was studied in solutions with basic pHs and various nitrate ion concentrations. Corrosion at the open circuit potential was observed to proceed by the galvanic coupling of α and β' phases, leading to a surface dezincification of the β' phase and the evolution of the passive layer. When the alloy was polarized in the anodic domain, a pseudo-passive or a passive stage followed by a passive breakdown was observed.

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