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Effect of MnO-4 Anion Inhibition on Corrosion of (70%Cu-30%Zn) Brass in Salt and Basic Solutions | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 29, Issue 16, 2011, Pages 3320-3330 PDF (331.16 K) | ||
| DOI: 10.30684/etj.29.16.6 | ||
| Author | ||
| Mervit M. Al-Jnabi | ||
| Abstract | ||
| This research involves study effect of MnO-4 anion addition as inhibitor on the polarization behavior of (70%Cu-30%Zn) alloy in salt and basic medium ( 0.6 M NaCl & 0.6 M NaOH) by potentiostatic method where Tafel slopes and corrosion rate (Rmpy) and inhibition efficiency (El%) for each salt and basic environments were measured . Result of the tests shows that the values of Tafel slopes and corrosion rate decreases with adding the MnO-4 anion in two solutions, the Inhibition efficiency of 70%Cu-Zn30% alloy in NaOH solution more than that observed in NaCl solution. which means that the basic media is more corrosive Cu-Zn alloy even after the addition of inhibitor. | ||
| Keywords | ||
| inhibition; brass corrosion; MnO; anion; KMnO | ||
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