{"id":7632,"date":"2022-10-26T16:17:40","date_gmt":"2022-10-26T14:17:40","guid":{"rendered":"https:\/\/inviker.com\/?p=7632"},"modified":"2025-05-29T10:11:00","modified_gmt":"2025-05-29T08:11:00","slug":"vci-corrosion-protection","status":"publish","type":"post","link":"https:\/\/inviker.com\/en\/blog\/products-packaging\/vci-corrosion-protection\/","title":{"rendered":"VCI corrosion protection"},"content":{"rendered":"\n

Corrosion is a constant threat to products in the industrial sector, making it crucial to find new and effective ways of protection<\/strong>. Industrial packaging is an essential part of the protection chain, ensuring that goods remain intact during transport and storage.<\/p>\n\n\n\n

To fully appreciate the importance of packaging in corrosion protection, it is important to understand what corrosion is, how it occurs, and the role of volatile corrosion inhibitor or VCI in this process.<\/p>\n\n\n\n

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What is corrosion<\/h2>\n\n\n\n
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Corrosion is a process that causes the deterioration of materials through an electrochemical reaction when exposed to environmental elements<\/strong>.<\/p>\n\n\n\n

It is a natural and spontaneous process, a chemical reaction involving three factors<\/strong>: the affected material, the environment and water. The rate of corrosion depends on ambient temperature and salinity of the agents with which the material comes into contact.<\/p>\n\n\n\n

Metals are the most commonly affected materials<\/strong>, but not exclusively. There is a difference between corrosion and oxidation, where the former is a type of oxidation that can lead to rust formation. All alloys are susceptible to corrosion, but those containing ferrous metals, such as iron, will rust.<\/p>\n\n\n\n

Metals typically undergo oxidation <\/strong>in the presence of water and moisture, resulting in the formation of a layer of rust or corrosion on iron and steel surfaces. However, corrosion <\/strong>can occur when metals are exposed to air and chemicals, leading to the formation of metal oxides or salts.<\/p>\n\n\n\n

Other terms used are white rust on galvanised steel, green patina, tarnish, pitting, flaking and peeling.<\/p>\n\n\n\n

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Types of corrosion protection<\/h2>\n\n\n\n
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An estimate of five tonnes of steel are dissolved worldwide every few seconds due to corrosion. In packaging there are two types of corrosion protection that can be used to prevent rust formation and combat corrosion.<\/p>\n\n\n\n

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Active or chemical protection<\/h3>\n\n\n\n

Active protection modifies physical processes<\/strong> to fight corrosion. The most significant example is the creation of a VCI protective atmosphere. VCI is a volatile corrosion inhibitor that works by creating a protective atmosphere around the metal surface, preventing corrosion.<\/p>\n\n\n\n

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Passive or physical protection<\/h3>\n\n\n\n

Passive protection fights corrosion by creating physical barriers against moisture<\/strong>. Several methods can be used.<\/p>\n\n\n\n