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Copper Powder For Surface Coating

Depending on the purpose of surface coating different methods may be used to apply copper powder, brass powder and bronze powder to a surface.

Thermal spraying

Hardfacing alloys deposited by thermal spraying include copper powder or copper-zinc-tin alloy powders such as brass powders and bronze powders.
They are used to prevent adhesive wear, fretting wear, and cavitation wear. Applicable thermal spray process include oxyfuel powder spray and high-velocity oxyfuel powder spray method.

Resin Based Coating

Pure Copper and copper alloy flakes suspended in a thick latex glaze base may be used for surface coating. Copper Coating can be applied to almost any surface, causing the surface to take on the appearance of real copper. It doesn't stop there! Enhance the finish by applying one or more patina oxidizers to produce beautiful aging effects. You may produce depth, age and realistic character with a full range patina shades. In a matter of minutes you can transform wood, plaster casts, ceramic, tile, plastic, Styrofoam, fiberglass, cement, almost any surface into a work of aged copper art.

Primary use

Gives non-metal objects the appearance of a metallic surface. May be used on wood, ceramic, clay, unglazed tile, plastic, fiberglass, concrete and others. May be used on metals if the surface is properly prepared.

Secondary use

To use as a base coat on which to develop a patina, primarily on non-metal objects that would not otherwise be able to patina. Also may be thinned with water or a patina oxidizer for use as a stain or wash.

Application Method

The latex glaze based copper coating may be applied like any other latex paint. First prime the surface to be coated. Allow the primer to dry. Next apply the first coat of metallic coating using a brush, roller, sponge, spray, or any other method. The first coat should be fairly thin. Allow this to dry from four to twenty-four hours or until cured. Additional thin coats may be applied as desired. Allow each coat to cure before applying another coat, or the coating may become elastic. If you wish to patina areas of the coated surface, the patina oxidizer should be applied when the final coat is still damp, and only to the areas that you wish for a color change to occur. Depending on the surface coated and the amount of patina oxidizer used, a color change should begin to form in about ten minutes.

Other Methods

Copper powder flakes and copper alloy flakes suspended in a solvent base resin such as polyurethane or polyester may also be used for creating surface coating with metallic effect of copper. Unlike water based latex, the oil/solvent based resins may not be used on Polystyrene surfaces. Solvent based coatings are not generally used to develop patina. These resins are more resistant to water and water based oxidizers.

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