

Corrosion Resistance of Copper-Doped Lead in Sodium Chloride Solution
https://doi.org/10.31615/j.corros.prot.2025.116.2-5
Abstract
Lead is a very ductile metal and is widely used in industry both in its pure form and in the form of alloys with other components. The high resistance of lead against corrosion in many mineral acids has led to its widespread use in the chemical industry for lining chemical equipment, pipelines and containers, for hot leading instead of tinning. Lead is resistant to corrosion because a film of hydroxide forms on its surface upon contact with air and a film of lead sulfate upon contact with sulfuric acid.
This paper presents the results of a study of the electrochemical corrosion of lead-copper alloys in an electrolyte medium of 0.03, 0.3 and 3.0% NaCl. Corrosion and electrochemical studies of the alloys were carried out by the potentiostatic method on a PI-50-1.1 potentiostat in a potentiodynamic mode at a potential sweep rate of 2 mV/s. It has been shown that alloying lead with copper increases its corrosion resistance by 15…20%. The main electrochemical potentials of free corrosion, pitting formation and repassivation of the lead corrosion process during copper alloying shift to a positive range of values, and decrease from the concentration of sodium chloride.
About the Authors
S. U. KhudoiberdizodaTajikistan
Saidmiri U. Khudoiberdizoda, Cand. in Technical Sciences, Leading Researcher
299/2, Sadriddin Aini st., Dushanbe, 734063
I. N. Ganiev
Tajikistan
Izatullo N. Ganiev, Academician of the National Academy of Sciences of Tajikistan, Doctor of Chemical Sciences, Professor, Head of the Laboratory
299/2, Sadriddin Aini st., Dushanbe, 734063
J. H. Dzhayloev
Tajikistan
Jamshed H. Dzhayloev, Cand. in Technical Sciences, Leading Researcher
299/2, Sadriddin Aini st., Dushanbe, 734063
S. Yu. Kireev
Russian Federation
Sergey Yu. Kireev, Doctor of Technical Sciences, Professor
40, Krasnaya str., Penza, 440026
A. Z. Yangurazova
Russian Federation
Alfiya Z. Yangurazova, Senior Lecturer
40, Krasnaya str., Penza, 440026
Yu. N. Kirilina
Russian Federation
Yulia N. Kirilina, Cand. in Technical Sciences, Associate Professor
40, Krasnaya str., Penza, 440026
N. N. Mullaeva
Tajikistan
Nukra N. Mullaeva, Cand. in Technical Sciences, Leading Researcher
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Review
For citations:
Khudoiberdizoda S.U., Ganiev I.N., Dzhayloev J.H., Kireev S.Yu., Yangurazova A.Z., Kirilina Yu.N., Mullaeva N.N. Corrosion Resistance of Copper-Doped Lead in Sodium Chloride Solution. Theory and Practice of Corrosion Protection. 2025;30(2):56-63. (In Russ.) https://doi.org/10.31615/j.corros.prot.2025.116.2-5