Metals commonly anodized
Aluminum: Unquestionably the best anodizing material, it has a naturally occurring oxide layer that easily thickens and becomes colored during the process. provides outstanding wearability, corrosion resistance, and aesthetics.
Titanium: Titanium oxide is anodized to produce a vivid, long-lasting layer that has a distinct rainbow color. utilized in sporting goods, jewelry, and medical implants for both functional and decorative purposes.
Magnesium: mainly anodized to serve as a foundation for paint adhesion because of the thin native oxide layer. better than aluminum in terms of aesthetics and corrosion resistance, but is not as widely used.
Metals that can be anodized with limitations
Tantalum: High biocompatibility and corrosion resistance make it ideal for electronics and medical implants. Compared to other metals, anodization is less common and more complicated.
Niobium: Comparable to tantalum, it has a high resistance to corrosion and is employed in specific fields such as superconducting magnets and capacitors. Commercial anodization is not a common practice.
Zinc: Mainly used for ornamental purposes because of its low wear resistance. offers vivid colors and serves as a paint primer.
Metals generally not suitable for anodization
Steel: Anodizing produces a strong oxide layer that is fragile and prone to cracking. For steel, alternative surface treatments like galvanizing are recommended.
Copper: When anodized, a dull, black oxide layer forms; this layer is not appropriate for most applications. For copper, alternative finishing methods such as electroplating are recommended.
Nickel: Like copper, it is rarely anodized and develops a dull black oxide layer.
Never forget that anodized finishes can differ in success and characteristics even when the metals are compatible due to different alloy compositions and pre-treatment methods. The best course of action for your unique application and intended result must be determined by consulting with a professional anodizing service.
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