Architectural Insights: Corrosion
Metals corrode because we use them in environments where they are chemically unstable. Only copper and the precious metals (gold, silver, platinum, etc.) are found in nature in their metallic state. All other metals, to include iron-the metal most commonly used-are processed from minerals or ores into metals which are inherently unstable in their environments.
Gold is the only metal which is thermodynamically stable in room temperature air. All other metals are unstable and have a tendency to revert to their more stable mineral forms. Some metals form protective ceramic films (passive films) on their surfaces and these prevent, or slow down, their corrosion process.
If you happen to wear anodized titanium earrings, then the thickness of the titanium oxide on the metal surface will refract the light and cause rainbow colours to appear. If you are wearing stainless steel eyeglasses, the passive film that formed on his eyeglasses is only about a dozen atoms thick, but this passive film is so protective that your eyeglasses are protected from corrosion.
We can prevent corrosion by using metals that form naturally protective passive films, but these alloys are usually expensive, so we have developed other means of corrosion control.
Standard and custom sized metals available
- Sheets, Rolled Foils, Strip, Coils, Offcuts
- Brass, Stainless Steel, Copper, Tinned Copper, Nickel, Cupronickel, Phosphor Bronze, Pewter, Aluminium. Minimum order quantities apply
- 0.05mm-1mm for Foil and strip. Other thicknesses available on request
- Standard width 305mm, larger widths are available
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