Anodizing, or anodising, is an http://www.answers.com/topic/electrolyte http://www.answers.com/topic/passivation process used to increase the thickness and density of the natural http://www.answers.com/topic/oxide layer on the surface of metal parts. This process is of no use on http://www.answers.com/topic/carbon-steel-3 because rust puffs up and flakes off, constantly exposing new metal to corrosion. But on many other metals, anodizing increases http://www.answers.com/topic/corrosion resistance and wear resistance, and provides better adhesion for paint primers and glues than bare metal. Anodic films can also be used for a number of cosmetic effects, either with thick porous coatings that can absorb dyes or with thin transparent coatings that add interference effects to reflected light. Anodization changes the microscopic texture of the surface and can change the http://www.answers.com/topic/crystal-structure of the metal near the surface. Coatings are often porous, thick ones inevitably so, so a sealing process is often used to improve corrosion resistance. The process derives its name from the fact that the part to be treated forms the http://www.answers.com/topic/anode portion of an http://www.answers.com/topic/electrical-network in this http://www.answers.com/topic/electrolyte process. Anodizing can prevent http://www.answers.com/topic/galling of threaded components. Anodic films are generally much stronger and more adherent than most paints and platings, making them less likely to crack and peel. Anodic films are most commonly applied to protect http://www.answers.com/topic/aluminium-alloy, although processes also exist for http://www.answers.com/topic/titanium, http://www.answers.com/topic/zinc, http://www.answers.com/topic/magnesium, and http://www.answers.com/topic/niobium.
Metal anodizing helps reduce corrosion and water damage. Metal anodizing also helps paint and other coatings stick to metal surfaces better.
Anodizing method can be prevented.
From Wikipedea; Anodizing "Anodizing is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts. The process is called "anodizing" because the part to be treated forms the anode electrode of an electrical circuit. Anodizing increases corrosion resistance and wear resistance, and provides better adhesion for paint primers and glues than bare metal".
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Anodizing. Anodizing is an electrochemical process that converts the metal surface into a decorative, durable, corrosion-resistant, anodic oxide finish.
One can find more information about anodized products from the following sources: Aluminium Plating, Anodizing, Aluminium Anodizing, Sears, Target, Wise Geek, Focuser, Calphalon.
because it is faster and simpler process
The anodizing process involves the formation of a stable oxide layer on a metal surface, typically aluminum. The chemical reaction involved can be represented as: 4Al + 3O2 -> 2Al2O3. This equation shows the formation of aluminum oxide (Al2O3) on the surface of the aluminum metal during the anodizing process.
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Anodizing is usually done to give a rust-proof coating to steel.
NAICS Code(s) 332813 (Electroplating, Plating, Polishing, Anodizing, and Coloring)
Yes. Anodizing does not affect the recycle-ability of aluminum alloys.