The Difference Between Anodizing And Conductive Oxidation
|In order to overcome the defects of aluminum alloy surface hardness, wear resistance, etc., expand the scope of application and extend the service life, surface treatment technology has become an indispensable part in the use of aluminum alloys, and anodizing technology is currently the most widely used and most successful of.|
Anodizing, electrochemical oxidation of metals or alloys. The process of forming an oxide film on aluminum products (anode) under the corresponding electrolyte and specific process conditions due to the applied current. Anodization, unless otherwise specified, usually refers to sulfuric acid anodization.
The difference between anodizing and conductive oxidation
- 1. Anodizing is carried out under high voltage. It is an electrochemical reaction process; conductive oxidation (also called chemical oxidation) does not need to be energized. It only needs to be immersed in a potion. It is a A pure chemical reaction.
- 2. Anodizing takes a long time, often tens of minutes, while conductive oxidation only takes a few tens of seconds.
- 3. The film produced by anodic oxidation has several micrometers to tens of micrometers, and is hard and wear-resistant; the film produced by conductive oxidation is only 0.01-0.15 micrometers, which is not very wear-resistant, but it can conduct electricity and resist atmospheric corrosion. Is its advantage.
- 4. The oxide film is originally non-conductive, but because the film produced by conductive oxidation is very thin, it is conductive.
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