Corrosion of tin can and its inhibition: A review

Abstract

Tin is a chemical element which is represented by the symbol Sn. Tin is most commonly used in the form of tin cans. Food cans mainly store food stuff and used by packaging industry. The corrosion is a major problem in tin cans and a matter of great concern for the corrosion engineers as well as researchers. This article deals with corrosion behaviour of tin cans in different media and its inhibition. Researches which have been done on dissolution of tin in different types of canned products containing hydrochloric acid, tartaric acid, citric acid, maleic acid and formic acid have been described here since acids have a great tendency of dissolving the metal to which they come into contact. It has been found that artificial fruit juices and preservatives augment the rate of corrosion as compared to natural juices and acids. The comparative study of the rate of corrosion in tin cans under different conditions along with the techniques to determine the rate of corrosion has been studied The literature review on a wide range of corrosion inhibitors used to inhibit corrosion has been systematically carried out. The main purpose of this review is to showcase the various cases of corrosion mechanism and inhibition methodologies to combat corrosion of tinplate.

Sage Extract as a Natural Source of Corrosion Inhibitor for Tinplate in 3.0 % NaCl

“…Sodium chloride solution is often used in the packaging of pet food, meat, some vegetable products and fish. Addition of some additives, such as nitrates or nitrites, as well as an increase in temperature can cause corrosion of the tinplate sheet in the sodium chloride solution ( 1 ). The corrosion occurs as oxygen penetrates the tinplate via small pores and fractures on its surface.…”

“…Since tinplate is quite important economically for the canning industry and due to its various industrial applications, the protection of tinplate against corrosion has attracted a lot of attention. A small number of studies on the corrosion behaviour of tinplate have been conducted, and the corrosion behaviour in neutral media is still uncertain ( 1 - 5 ). Therefore, a study of the corrosion behaviour of tinplate in sodium chloride solution is of great significance.…”

“…The alloy layer of tinplate greatly affects the corrosion resistance of electrolytic tinplate. In order to improve the corrosion resistance of tinplate, some studies about the alloy layer of tinplate have been conducted ( 1 , 4 ). There are several methods to protect tinplate against corrosion and one of them is to add natural inhibitors to the solution in contact with the surface in order to reduce the corrosion rate and inhibit the corrosion reaction.…”