Oxide Coating

Oxide Coating

 

an intentionally applied protective film that is obtained by oxidation of the surface layer of metal products. Oxide coatings protect metal from corrosion and are used for decorative purposes and as electrical insulation. They also serve as undercoatings for such protective products as varnishes paints, and greasepaints. Oxide coatings are applied by chemical methods, for example, in air or liquid mediums using alkalis or acids, and by electrochemical methods, such as anodizing. Oxide films vary in thickness from fractions of a micron (μ) to 500–600 μ, depending on the oxidizing conditions and alloy composition. Oxide coatings are applied to steel and cast iron, as well as to alloys of aluminum, copper, and zinc.

References in periodicals archive ?
Zinc oxide coating also prevents corrosion of the nanostructures.
The bridge, which is 78 years old, is being cleaned and repainted with a zinc oxide coating to prevent corrosion, Transportation Department spokesman Dan Latham said.
The library offers specialized subjects like “Base Materials and Black Oxide Coating,” an instructional outline on black oxide coating that provides a description of the black oxide coating process, the common materials involved, and details the process itself.
Micralox is a patented aluminum oxide coating with a micro-crystalline barrier that revolutionises aluminum anodising.
The tests showed that the oxide coating effectively blocked electrolytes from the solution so the sensors remained fully functional.
The blade, flat ground to keep a durable edge, has a black oxide coating for low reflectivity and added corrosion resistance.
The beads have a magnetite core and a ceramic zirconium oxide coating and are designed for the immunomagnetic separation of target bacteria from enrichment cultures.
The regions that show iron in the elemental map have a bi-layer structure with an iron oxide film on top of the zirconium oxide coating.
But when the black oxide coating wears off the bearing surfaces of the tool, get it replaced.
Another method used is replacing lead with stainless steel with an oxide coating which has no scrap value and is harder to remove.
Surface characterization of Silver oxide (AgO) impregnated catheter by measurement of contact angle, indicated that the Silver oxide coating increased the hydrophobic nature of the material as seen in Table 2.
The glass has an invisible thin-film metallic or oxide coating which allows the passage of short-wave solar energy into a building without allowing sensible heat and light to escape.