Behaviour of Brasses Corrosion in Nitric Acid with and without PMT | Zendy

M. Mihit | Zendy; M. Belkhaouda | Zendy; L. Bazzi | Zendy; R. Salghi | Zendy; S El-Issami | Zendy; E Ait-Addi | Zendy

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Behaviour of Brasses Corrosion in Nitric Acid with and without PMT

Author(s) -

M. Mihit,

M. Belkhaouda,

L. Bazzi,

R. Salghi,

S El-Issami,

E Ait-Addi

Publication year - 2007

Publication title -

portugaliae electrochimica acta

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.252

H-Index - 27

eISSN - 1647-1571

pISSN - 0872-1904

DOI - 10.4152/pea.200704471

Subject(s) - nitric acid , corrosion , materials science , metallurgy , nuclear chemistry , chemistry

The comparative study of corrosion behaviour of brasses 70Cu30Zn and 60Cu40Zn in HNO 3 solution in absence and in presence of 1-phenyl-5-mercapto-1,2,3,4-tetrazole (PMT) was studied by gravimetric and electrochemical methods. Results obtained are in good agreement and reveal that the corrosion rate depends on immersion time and zinc content in the alloy. Copper and zinc losses from each specimen studied, at various immersion times, were estimated by Atomic Adsorption Spectroscopic analysis. This shows that the inhibition efficiency of the inhibitor towards copper is more significant than zinc. PMT was adsorbed preferentially on the copper surface and inhibits the process of corrosion of brasses in the nitric acid medium.

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