Coating, metallizing, thermal spraying, vacuum metallizing, vacuum deposition, and metalation are various process involved in metallization process. Coating in metallization is used in enhancing appearance, adhesion and resistance to corrosion, wear and scratches through covering the surface of the object with another substance. Metalizing involves various processes used in treatment, coating or just combination with a metal. Thermal metallization involves where a heated substance is sprayed on the surface of another substance. Reacting an organometallic compound with an organic compound results into a new substance and the process is referred to as metalation process. Another process involved in metallization is the vacuum deposition which takes place in a vacuum where a very thin layer of a substance is deposited on the surface of an object. Vacuum chambers are used in the vacuum metalizing process where a metal coating is placed on an object.
During the vacuum metalizing process, the metal to be used in the coating is heated in a vacuum chamber to its boiling point until it vaporizes. The vaporized metal is then allowed to condense while settling on the surface of the object to be coated. Heating and vaporization of the metal uses heat generated in various processes including resistance heating and electron beam. Electric currents are passed through the metal where they encounter resistance hence heating the metal in resistance heating. Electron beam uses cathode rays which emit negative cathodes in a vacuum tube producing heat. Vacuum metallization of objects is used to decorate the objects, protect the object from wear and tear and also to enhance the functions of that object such as increasing the conductivity of poor electrical conductor materials.
Benefits of vacuum metalizing are immeasurable. Vacuum metalizing always results into a uniform polish on the object with minimal effects on the health of the user. Some substances and metals used in the vacuum metallizing process are highly hazardous to human health hence users are protected from coming into contact with them. Durable metals and other objects that last for a long period are also produced by vacuum metallizing where they cannot contact air and moisture which results into metal rusting. Reduced pollution is also an important benefit of vacuum metallization since the amount of carbon released into the atmosphere is reduced.
During the process of vacuum metallization, it is important to take precaution measures that may damage the object during the process making it lose value in the market. Burned parts on the objects indicated by some parts lacking the shiny silver luster, distinct colors on the object as a result of the metal coating being too thin and appearance of rainbow colors on the object may lower the quality of the object. Quality can be maintained by ensuring that all those problems likely to be experienced are prevented.