The degradation of metals by corrosion is a process brought on by chemical, electrochemical, and biological processes. It can dramatically shorten the lifespan of a metal like pressure controller device component or structure. Corrosion is a result of several environmental conditions, including oxygen content, temperature, and surface area.
The top 6 elements that might impact corrosion are summarized in this article.
The Concentration of Oxygen:
One of the most significant elements impacting corrosion is oxygen concentration. The energy necessary for oxidation processes is provided by oxygen molecules, which are drawn to metal surfaces of the pressure controller or valves. The ability of oxygen to corrode increases with its concentration in a particular environment. More oxygen molecules interacting with the metal surface produce a corrosion layer, which over time may cause metal deterioration and component failure.
The oxygen may form an electric circuit on a metal surface which speeds up corrosion reactions with other substances like iron oxide, carbon steel, aluminium, or magnesium alloys. A high-humidity enriched atmosphere is often required for a good corrosion response.
Particularly as it relates to the amount of water in the air, relative humidity has a significant impact on the corrosion process. As water has a higher capacity than dry air to enter and interact with metals, high moisture levels can speed up corrosion. This mostly happens in locations where the electronic pressure valves are installed with huge pipes. Moreover, relative humidity levels higher than 55% greatly speed up the growth of rust on metal surfaces.
Sulphur dioxide (SO2) which is a byproduct of air pollution is a significant contributor to the corrosion process in pressure controllers or other metallic devices. When SO2 and atmospheric water combine to form sulfuric acid mist, it affects any unprotected metallic surface and can cause corrosion over time. And it happens mostly if the issue is not addressed right away by effective mitigation techniques.
Salty Water Environment:
As saltwater settings require relatively few additional ingredients for significant long-term corrosive effects, they are among the most dangerous for any form of the exposed metallic surface. Infrastructures in coastal areas are typically immediately affected by this, making them vulnerable to strong actions. Varieties that include naturally occurring salts are used to intensify corrosive substances.
Temperature is a significant factor in corrosion. High temperatures have the potential to speed up corrosion and make materials more fragile. Low temperatures are not completely protected, but they can delay the corrosive reaction. In many situations, ice still acts as a long-term corrosive element, and extremely cold temperatures can have consequences. To provide the ideal environmental conditions for a certain metal like electro pneumatic pressure regulator or construction, the temperature should be continuously monitored.
The surface area of a metallic structure affects corrosion rates as well. More corrosion will occur on a bigger surface area than on a smaller one when it is exposed to corrosive substances. As a result, things with rough surfaces corrode more quickly than those with smooth ones. This is because the element has a larger surface area to interact with. To reduce the quantity of exposed material, safeguards like paint or a metal coating on the outside are frequently utilised.
In the following article, we discussed certain important elements that can lead to severe corrosion in pressure controllers and other electromechanical devices.