What Are the Surface States of Molybdenum Rods?

Bright (Polished): After polishing, the surface is smooth and smooth, showing a bright metallic luster.

Black (Black): The surface is dark black or dark gray without special treatment.

Oxidized: The surface is oxidized to form an oxide coating, often gray, blue or black.

Sanded (Sanded): After sanding treatment, the surface has a tiny gravel-like texture to improve the surface roughness.

Passivated: After passivation treatment, a protective passivation layer is formed to improve corrosion resistance.

Chemically Treated: Chemically treated, such as pickling or electrochemical polishing, to remove oxides and impurities and improve surface purity.

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