What Is Aluminum Oxide Sheet?

Anodized aluminum plate is aluminum plate placed in the corresponding electrolyte (such as sulfuric acid, chromic acid, oxalic acid, etc.) as the anode, under specific conditions and external current action, electrolytic. The anodic aluminum plate is oxidized, forming a thin layer of alumina on the surface, the thickness of which is 5 ~ 20 microns, and the hard anodic oxide film can reach 60 ~ 200 microns. Anodized aluminum plate, improve its hardness and wear resistance, up to 250 ~ 500 kg/square mm, good heat resistance, hard anodized film melting point up to 2320K, excellent insulation, breakdown resistance voltage up to 2000V, enhance the corrosion resistance, in ω=0.03NaCl salt spray after thousands of hours of corrosion. The thin layer of oxide film has a large number of micro holes, can absorb various lubricants, suitable for the manufacture of engine cylinder or other wear-resistant parts; The membrane has strong adsorption capacity and can be colored into a variety of beautiful and gorgeous colors. Non-ferrous metals or their alloys (such as aluminum, magnesium and their alloys, etc.) can be anodized.

Chemical aluminum oxide plate is aluminum plate in weak alkaline or weak acid solution, part of the matrix metal reaction, the surface of the natural oxide film thickening or other passivation film processing process, commonly used chemical oxide film chromic acid film and phosphoric acid film, they are thin and good adsorption, can be coloring and hole sealing treatment.

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