FIELD: chemistry.
SUBSTANCE: invention can be used to create coatings with multimodal roughness on the surface of aluminium and its alloys, which, in the subsequent application of the hydrophobizing agent, impart to the parts hydrophobic properties. Method involves washing parts, processing them in a solution of lye, subsequent washing parts, their drying and anodizing at room temperature, wherein anodizing is carried out in a 10 m aqueous solution of nitric acid with a current density of 10-100 Ma/cm2 for 5-10 min, and then washing of parts and their drying are performed.
EFFECT: creation of a coating with micro- and nanoscale roughness, which can serve as a sublayer to create a hydrophobic surface, the proposed electrochemical treatment does not require complex equipment, large energy inputs, and is performed in a short time.
3 dwg, 1 tbl, 2 ex
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