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Corrosion resistance behaviour of duplex (α β) brass (65-35% Cu – Zn alloy) was evaluated in different nitric acid and nitric acid - chloride concentrations. The experiments were performed at ambient temperature using potentiodynamic polarization measurement. Various results obtained are presented in the Tables and curve figures. This paper reports the observed electrochemical response of the experimental tests. Different concentrations of the test media were used with and without sodium chloride addition. Tafel and polarization resistance calculations/ measurements were used to estimate the corrosion rate and polarisation resistance of the alloy samples tested. The results obtained showed varied magnitude of corrosion susceptibility of the brass alloy in HNO3 concentrations and its acid chloride test environments.
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Loto et al. (2012) studied this question.
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