Preparation method of aluminum-based liquid injection type drag reduction surface

• Main Authors: ZHANG HAIFENG, CHEN WEIPING, LIU XIAOWEI, TUO YANJING
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2017
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

The invention belongs to the technical field of metal surface treatment and modification and particularly relates to a preparation method of an aluminum-based liquid injection type drag reduction surface. The preparation method comprises the following specific steps: (1) preparing a micron-sized rough surface on an aluminum surface through a chemical etching method; (2) generating a zinc-aluminum oxide thin film through a hydrothermal synthesis method and forming a micro-nano cooperative binary structure on the aluminum surface; (3) modifying with a low-surface energy substance to form a super-hydrophobic surface; (4) injecting lubricating oil into the super-hydrophobic surface to form the injection type drag reduction surface. The prepared injection type drag reduction surface has wetting resistance to water, alcohol, rapeseed oil, industrial white oil and other liquid, a contact angle for the water is about 110 degrees, a sliding angle is less than 3 degrees, and the surface has a good drag reduction effect