Authors: I.N. Ganiev, M.B. Jumaeva, K.M. Khojanazarov

Title of the article: Influence of magnesium additive on anodic stability of lead babbitt B(PbSb15Sn10) in an aqueous solution of NaCl

Year: 2024, Issue: 3, Pages: 109-118

Branch of knowledge: 2.6.1 Metal science and heat treatment of metals and alloys

Index UDK: 669.45.018.8.24/882

DOI: 10.26730/1999-4125-2024-3-109-118

Abstract: In mechanical engineering, various alloys based on lead with the addition of antimony, tin and other elements, which are called babbitts and are distinguished by their low fusibility and relatively low cost, are widely used. Also, alloyed lead babbits have high anti-friction properties, which makes it possible to use them in the production of parts and mechanisms operating under friction and sliding conditions. The main advantage of lead babbitts is their low cost, which is often a characterizing criterion when choosing a metal for certain purposes. Excellent corrosion resistance allows these types of babbitts to be used in conditions of high humidity and even in water. Metal corrosion is considered one of the main problems for the trouble-free operation of any mechanism. Due to the release of chemicals into the environment, machine parts are exposed to the corrosive activity of this environment. One way to protect against such activity is the use of new lead-based alloys. The paper presents the results of an experimental study of the anodic behavior of lead babbit B(PbSb15Sn10) doped with magnesium from 0.1 to 2.0 wt. %, in an aqueous solution of NaCl. It has been shown that the addition of magnesium reduces the corrosion rate of lead babbitt B (PbSb15Sn10) by 20-30%. With increasing magnesium concentration in the initial alloy, the potentials of corrosion, pitting and repassivation shift to a positive range of values. An increase in the concentration of chloride ion in a NaCl solution promotes an increase in the corrosion rate of alloys, which is accompanied by a shift to the negative region of the main electrochemical potentials of the alloys.

Key words: lead babbit B (PbSb15Sn10) magnesium aqueous NaCl solution anodic behavior potentiostatic method corrosion rate corrosion current

Receiving date: 04.04.2024

Approval date: 29.05.2024

Publication date: 28.06.2024

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