Preparation method of super-hydrophobic aluminum or aluminum alloy surface

• Main Authors: MA JINGHONG, XU JIAN, GONG JINGHUA, WANG ZHIJIE, JI WEIWEI
• Format: Patent
• Language: Chinese; English
• Published: 02.04.2014
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; 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; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING

The invention relates to a preparation method of a super-hydrophobic aluminum or aluminum alloy surface. The preparation method comprises the following steps: (1) washing, namely washing aluminum or aluminum alloy by acetone and ethanol in sequence under normal temperature and normal pressure to remove oil stains from the surface so as to obtain clean aluminum or aluminum alloy; (2) roughening the surface, namely processing the clean aluminum or aluminum alloy in a water solution containing sodium metaaluminate and urea to roughen the aluminum or aluminum alloy surface; (3) hydrophobizing, namely performing chemical vapor deposition on the aluminum or aluminum alloy processed in the step (2) at 120-150 DEG C, and modifying the aluminum or aluminum alloy surface with a hydrophobic compound to obtain the super-hydrophobic aluminum or aluminum alloy surface. According to the method, the used process is simple, the operation is convenient, and the industrialization is easy to realize; the surfaces of aluminum or