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Aluminium-Anodizing
1. Aluminium Anodizing: For Artistic Effects
The process of aluminium anodizing is often used as a perfect way to finish and colour the
metal. Given that aluminium is used with different applications like cooking utensils, doors,
windows, cars, and motorbikes, this process can come in handy if you want the metal to look a
bit different from its usual self.
Anodizing aluminium can also be used to make the metal durable and stronger. The anodic
finish is widely available and is quite affordable. The finish converts the aluminium surface to
an oxide which is usually very thin. An additional beauty about using this finish is that it offers a
much thicker oxide coating, which can be as thick as you require it to be. The aluminium oxide
is also very rigid which subsequently improves the metal’s resistance to abrasion especially
when the metal is exposed to industrial, humid and marine atmospheres. Keep in mind that the
finish will also improve the metal’s appearance.
By using dyes and special procedures, the anodic finish will make the aluminium look like
copper, stainless steel or even brushed bronze. The finished aluminium is also very easy to
clean and can resist heat when the temperatures are high. Aluminium anodizing can be defined
as an electrochemical conversion process where the metal surface is converted to aluminium
oxide as a result of various reactions on going at the anode in an acidic solution. Usually, the
oxide formation gets inward and then towards the fresh aluminium. Eventually, the very first
formed oxide remains in contact with the anodic solution during the whole process with the
last formed being at the metal interface. The final coating will be thicker than the original metal
replaced.
The mill product type, worth, alloys etc. have significant effects on the final appearance of the
aluminium, its functional properties such as corrosion resistance and abrasion. To get the very
best, the finisher must have good knowledge on how the metal needs to be treated. In fact, if
you want the colour of the aluminium changes, the finisher can use coloured anodizing dye.
Usually, the used dye soaks into the tiny pores of the anodized layer and colours the aluminium.
Then, this layer is sealed with the colour appearing as part of the metal. This process can also
be used to achieve a great artistic effect as it will make the aluminium have striking colours to
ornament the various aluminium appliances.
References:
http://www.bryanpryor.com/anodizing.php
http://www.anodizingltd.co.uk/
http://www.coatfab.com/anodising.htm
http://www.metalfinishing.com