It’s no wonder they are so popular as they are extremely light yet durable, increasing their speed on the water and ability to transport via trailer. One way to prevent this corrosion is to use disinfectants that dissolve in water or other liquid.In 2015, more than 44,400 aluminium boats and pontoons were sold, making them the third-highest selling category of boats for the year. The environment and not the bacteria corrode the aluminum. These bacteria transform organic substances into carbon dioxide, organic acids, and metabolites that are released into the environment. Microbiological Corrosion in aluminum is caused by certain types of bacteria in an organic carbon source.Among the ways of reducing erosion are controlling the speed of the fluid, using corrosion inhibitors, or streamlining the shape of the aluminum to minimize turbulence. Erosion happens due to moving media such as a flowing liquid, which produces scratches and undulations in the aluminum that match the direction of the flow.Externally hardening the metal can help resist this type of corrosion. This type of corrosion usually happens within a few hours or days, depending on the speed and temperature of the liquid. Because the natural oxide film is destroyed, the aluminum suffers when the film is constantly torn and reformed. Gas bubbles inside the liquid, which then crash against the metal at high speed, producing rounded cavities. Cavitation happens when the hydrodynamic pressure is greater than the vapor pressure of a moving liquid.It happens due to the difference in aeration between the surface of the liquid and the area directly underneath it. Waterline Corrosion, as the name implies, occurs at the part of the metal that is just below the surface of water.It starts from coating defects like scratches, holes, or cut edges, and usually appears only after several years. It is a superficial attack, measuring only a few tens of microns. Filiform Corrosion affects only lacquered aluminum, making the surface look different.Creating alloys with high mechanical strength can reduce stress corrosion. But putting them together causes problems. By themselves, each of these factors does not affect the aluminum. Stress Corrosion combines a corrosive environment with mechanical stresses, such as bending.The thin sheets of metal between these planes peel off, which gives rise to the term “exfoliation.” Exfoliation Corrosion selectively affects the planes that run parallel to the direction of the rolling or extrusion.Propagation of intergranular corrosion usually begins as pits. This type of corrosion often reduces the mechanical properties of aluminum that leads to the destruction of components. Trans-Granular and Intergranular (Intercrystalline) Corrosion is microscopic, affecting metals at the granular level.The corrosion pits are covered with white gelatin made from alumina.

Pitting Corrosion puts unevenly shaped depressions on the surface of the aluminum due to contact with liquid media such as surface water, seawater, and humid air.This corrosion typically appears in highly acidic or alkaline media with dissolution rates ranging from a few micrometers per hour to a few micrometers per year. Uniform Corrosion appears as pits that measure one micrometer in diameter, producing a constant decrease in thickness over the entire surface of the metal.The following are 10 types of corrosion that can affect aluminum. The short answer is yes, aluminum does rust, although corrosion is a better technical term for what happens to this ubiquitous metal.

Will aluminium rust