An introduction to anodised magnesium
Magnesium is a highly reactive metal but the process of sulphuric acid anodising transforms it into a tough, corrosion-resistant material that is suitable for use in the electronics, aerospace and automotive industries.
What anodised magnesium is used for
Anodised magnesium is a lightweight alloy that is used in a variety of industry sectors, including in the creation of aircraft and satellite components, orthopaedic devices and motorcycle wheels.
Why magnesium needs to be anodised
Raw magnesium is highly reactive to oxygen and moisture, prone to corrosion and easily scratched and worn when exposed to mechanical stresses. Anodising, when performed by specialists such as www.poeton.co.uk/surface-treatments/anodising/sulphuric-acid-anodising/, retains the weight to strength ratio of raw magnesium but solves the issues detailed above by imparting a controlled oxide layer onto the material.
Benefits of anodised magnesium
When magnesium is anodised, it benefits from the addition of properties that enhance its usability, particularly in terms of aesthetics, corrosion-resistance and wear-resistance.
Anodising magnesium helps coatings to adhere better to treated components, rendering the process suitable for industries that require multi-layer surface systems. Anodised magnesium can also be dyed to deliver a custom finish that will not peel or fade while delivering a dazzling metallic appearance.
The anodised oxide layer imparted during the sulphuric acid anodising process creates a barrier to protect the material from moisture, oxygen and salt, rendering components suitable for use outdoors, including at sea and in high-humidity environments.
Finally, anodised magnesium is resistant to scratching and abrasion, meaning that treated components become more durable, leading to a lower maintenance burden and a reduced through-life cost.
