Thursday, 2 February 2012
Using Anodized Aluminium coating for Protection!
In simple terms, anodizing can be outlined as an electrolytic process that is utilized by manufacturers to extend the oxide layer on the surface of metals. As all the engineered materials have a tendency to corrode when they come in communication with the environment, many manufacturers try their level best to make their materials immune to corrosion. Corrosion can be outlined as the method in which the designed materials begin to disintegrate into the atoms they were made of. This disintegration occurs as the surface layer of the devised materials has a tendency to chemically react with the numerous chemicals that are present in the environment like air, water or the soil itself.
This corrosion process occurs slowly and ultimately the devised material begins to weaken and break down. That explains why folk who construct building, bridges or off shore ports supply a protective covering to these constructs. This protective covering acts as a barrier between the outer surface of the designed material and the environment and so, they can be corrosion resistant for several years to come. One of the finest methods to protect aluminum alloys, a material that is utilized in several constructs, is by providing an anodized aluminum coating to these alloys. This anodized aluminum coating makes the aluminum alloys immune to corrosion. Anodized aluminum coating also increases the alloys surface hardness. It may also be used to boost lubricating, adhesion or to permit dying the aluminum alloys.
This anodized aluminum coating is non-conductive. During normal conditions pure aluminum is immune to corrosion but the aluminium alloys that are commonly used in building different constructs or utensils etc have a tendency to corrode under normal conditions. That's why anodized aluminum coating is done to provide the aluminum alloys the required protection they need against corrosion. Though anodized aluminum coating does protect the alloys from corrosion, nevertheless any miniscule fissures in the coating can allow the corrosion process to occur that is why care is needed when the coating process is being done.
Thanks to the amount of resistance that anodized aluminum coating provides folk with, many architectural materials, air-craft parts and other end-user products are anodized. Folk can also find anodized aluminum in devices like flash-lamps, mp3 players, cameras, cooking utensils, window frames, sporting goods as well as roofs and other electric components and the list goes on.
The method of anodized coating ought to be done with attention and precision. Before the process the alloys are first cleaned. This cleaning process is often done in a solvent bath or a hot soak cleaner. Then the anodized aluminium is grown by passing an electrical current thru a conductive solution with the material present in the solution that the covering process is to occur. Different voltages are needed dependent on the numerous materials that are going to be coated. This process is one of the environment friendly processes.
The spinoffs of this process pose no negative damage to the environment. One thing that should ideally be kept in mind is that through this process the original surface of the material can be raised hence proper measurements needs to be taken before and after the procedure.
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