Corrosion is the process of degradation of materials, usually metals, which is caused by a chemical or electrochemical reaction with its environment. A chemical reaction occurs through changes in the chemical bonds between atoms whereas a electrochemical reaction occurs through transfer of electrons which causes simultaneous oxidation and reduction of the reactants resulting in flow of electric current which generates chemical changes in the system.
There are various factors which lead to corrosion. Some of them are exposure to moisture, abrasion, physical damage, high temperatures, microbial activity, exposure to acids, bases or other aggressive substances or any incompatible materials being used in contact with each other. Metals like iron, steel, aluminium, copper are susceptible to corrosion. Some of the other materials which can be corroded are polymers, plastics, glass, ceramics, electrical components and multi-layer materials.
Corrosion reduces the life span and efficiency of assets leading to increased maintenance and replacement costs which ultimately result in economic losses due to production downtime or reduced productive. Not to mention the health and safety risk to the public and environmental risk and liability.
One of the ways in which corrosion can be prevented is through electroplating. Electroplating is a process where a metal layer is deposited on the surface of a material through electrolysis. This metal layer forms a protective barrier and acts as an inhibitor to prevent corrosion. It increases the surface hardness making it more durable and less prone to damages or scratches. Electroplating increases the resistance of the materials to high temperatures making it prone to less thermal stress. It can also improve the aesthetic appeal making metal components which are visible or on display (e.g. jewellery, decorative objects) more visually appealing.
During the electroplating process, the surface to be electroplated is cleaned with solvents, abrasives or other methods. It is then immersed in an electrolytic bath containing a solution of the metal to be deposited and metal salts. An electric current is applied to the bath which causes the metal ions to be deposited on the surface thus creating a metal layer. After the metal layer has been deposited, the surface is removed from the bath and then polished, sealed or subjected to further treatments, depending on the desired final finish.
DU Organics manufactures various electroplating additives/intermediates. For obtaining more information with respect to the same, visit our website or contact us today!