nikeldatud

Nikeldatud is Estonian for a surface that has been coated with nickel. The term is used to describe objects whose exterior has a thin layer of nickel applied by plating, primarily to improve durability, wear resistance and appearance.

There are two main nickel-plating methods. Electroplating uses an electric current to reduce nickel ions from a solution onto the substrate, creating a uniform, adherent coating. Electroless nickel plating achieves deposition through a chemical reducing agent, without external current, and tends to produce very uniform coatings even on complex shapes. Electroless nickel is often combined with nickel-phosphorus or nickel-boron alloys, which can enhance hardness and corrosion resistance.

Finish options vary. Bright nickel provides a shiny, mirror-like appearance and is commonly used for decorative or consumer goods. Satin or matte nickel yields a subdued look and can improve wear resistance without gloss. The coating is typically just a few micrometres to tens of micrometres thick, enough to protect the base material while preserving dimensions.

Applications span many industries. Nickel plating is widely used on hardware fittings, plumbing components, automotive parts, electrical connectors, and kitchenware. It also serves as an undercoat for subsequent chromium plating or as a corrosion-resistant finish on corrosion-prone metals and plastics after proper surface activation.

Advantages include improved corrosion and wear resistance, solderability, and a controllable surface finish. Limitations involve potential nickel allergy concerns, sensitivity to abrasion, and the use of hazardous plating baths in some processes. Proper handling, waste treatment, and regulatory compliance are important aspects of nickel-plating operations.