4 Known Forms of Corrosion

Corrosion doesn’t just affect the pipe system but the whole plumbing system. This is because it has the capability of spreading it to other fixtures in our household. Moreover, it’s also the cause of the pipe system’s early deterioration. With that being said, as soon you found this in one of your fixtures, it would be best to take action. But before that, try to determine what kind of corrosion is in the system. In that way, you’ll be able to determine what repair method you’re going to apply. Most homeowners probably don’t know its kinds since corrosion looks just like the same. However, to help them, below are the types of corrosion.

  1. Uniform attack

The uniform attack is common in our plumbing system. It usually occurs due to the chemical or electrochemical reaction that spreads through an exposed surface. Pipes and other metal materials become thinner if it’s affected by this type of corrosion. This results in a decrease in its efficiency. For instance, a small amount of steel metal or zinc will be liquefied if plunged into a diluted sulfuric acid. In addition to this, the sheet iron roof becomes visible like the level of corrosion. Uniform attack contributes a major damage to a metal on a tonnage basis. However, depending on a technical standpoint, this isn’t an issue that we should worry about. The reason for this is because the lifespan of a device is accurately determined through an examination. On the other hand, opting for cathodic protection is a way to avoid the problem.

  1. Galvanic or Two-metal corrosion

Corrosion may also happen if two types of metals are connected and make contact with the corrosive and conductive solutions. Apparently, for metals which have low resistance to corrosion will be easily affected by it. In addition, the pipe’s structural integrity and efficiency decrease. On the other hand, less resistant metals become anodic while highly resistant ones become cathodic. This type of corrosion is termed “two-metal corrosion” due to the various metals and electric currents involved.

  1. Crevice corrosion

When this type of corrosion emerges in your pipe system, this means that there’s a major problem. This type is a dangerous form of corrosion. It can be seen in crevices and metal surfaces that are exposed to corrosive substances. Crevice corrosion attack is related to a small number of stationary compounds from lap joints, holes, gasket surfaces usually below bolts and rivet heads.

  1. Erosion corrosion

It is a type of corrosion that increases the deterioration rate of a metal. It can also be the attack on a metal because of relative motion of a caustic solution and a metal surface. Moreover, abrasion and mechanical wear effects are involved if the motion happens quickly. The metal will be removed from its surface like dissolved ions. In addition, the metal could also turn out to be a corrosive material. On the other hand, environmental alteration or movements can decrease corrosive influence especially if occurring under a stagnant situation. Moreover, the even isn’t considered to be an erosion-corrosion since there’s no increase in metal deterioration.