What Are Anodized Aluminum Colors

Aluminum alloy has become the preferred material for many industries due to its light weight, high strength and good corrosion resistance. The anodizing process not only enhances the protective properties of aluminum alloy, but also gives it a colorful appearance.

Anodized aluminum colors

The colors of anodized aluminum plate can be said to be varied, which is mainly achieved in two ways: natural oxidation color and dyeing.

Natural oxidation color is the color obtained by adjusting the electrolyte composition, current density, oxidation time and other process parameters without adding additional dyes during the anodizing process.

When anodized in sulfuric acid electrolyte, aluminum alloys often appear silvery white. This color is pure, simple, and has a natural metallic luster, giving people a fresh and modern feeling. It is widely used in architectural decoration, electronic product housings and other fields, such as the common aluminum alloy door and window frames, whose silvery white appearance is both beautiful and durable.

In oxalic acid electrolyte, a golden oxide film will form on the surface of aluminum alloy. This golden color has a warm tone, adding a sense of nobility and elegance to the product. It is more common in some high-end decorations and crafts.

When more rich colors are needed, the dyeing process comes into play. After anodizing, a porous oxide film structure is formed on the surface of the aluminum alloy. These micropores can absorb dye molecules to achieve dyeing. By choosing different dyes, a variety of gorgeous colors can be obtained. Adding copper salts can obtain a red oxide film, which is passionate and eye-catching. It is often used in some products that need to highlight visual effects, such as certain decorative parts of car interiors; adding cobalt salts can obtain a blue oxide film.

In addition, using organic dyes, almost any imaginable color can be created to meet the needs of different designs and application scenarios. From fashionable consumer electronics to art sculptures, you can see the rich colors of anodized aluminum alloys.

Applications of blue anodizing aluminum sheet

In the field of architecture, the blue anodized aluminum sheet is often used to create a unique architectural appearance. For example, some modern commercial buildings use blue anodized aluminum plates as curtain wall materials. In terms of interior decoration, blue anodized aluminum plates can be used for wall decoration and ceiling.

In the field of electronic products, blue anodized aluminum plates are also very popular. The shells of many high-end electronic products are made of blue anodized aluminum, such as the shells of tablets and laptops. Blue not only gives the product a fashionable and personalized appearance, attracting the attention of consumers, but also the high strength and good heat dissipation performance. At the same time, the oxide film on its surface has a certain insulation property, which improves the safety of the product.

In the automotive industry, blue anodized aluminum sheets are mainly used for automotive decorative parts. The decorative strips of the car wheel hub and the decorative strips on the side of the car body can add unique visual highlights to the car. The blue color matches the car body color, forming a strong visual impact, improving the overall appearance of the car and showing the unique style and personality of the vehicle. In addition, the corrosion resistance of anodized aluminum sheets enables it to cope well with various harsh environments faced by the car during driving, such as rain, muddy water splashing, etc., ensuring that the decorative parts remain beautiful for a long time.