Study On Construction And Performance Of Bionic Coupling Hydrophobicity And Anti-wear Surface Based On Typical Metals

Hydrophobic and super-Hydrophobic materials with lower surface free energy andgood anti-adhere performance have good application foreground in self-cleaning materials,liquid drag reduction, microfluidic devices and medicine fields. Applied precondition of allkind materials surfaces with hydrophobic and super-hydrophobic performance is obtained.Research of preparation methods are the main content at present. Wear is metal machineparts disabled main form. So, it has very importance meaning to lower friction and wear ofthe machine drive parts, heighten reliability of machine devices movement and extend usefullife.The2024aluminium and C1008carbon steel as the object of the research in this paper.It was constructed that the model metals surfaces by simulating nature biology withHydrophobicity and Anti-wear by instructing nature biologies (such as lotus leaves, conch,pangolin and desert lizard etc) having Hydrophobicity and Anti-wear, using the principle ofcoupling bionics, and adopting the methods of punch, chemical etching, laser engraving andnano electro-deposition ect. The performance and structure of above surfaces prepared areanalysed. Such coupling bionic Hydrophobic and anti-wear metal surfaces were applied toabrasion parts surfaces, and the performance is reviewed.The convex domes were fabricated by methods of punch on2024aluminium surfaces.Following, the microstructure was formed by chemical etching. The coupling bionic surfacesmorphologies were observed and analysed. The forming principle of microstructure andmorphologies was discussed. It was analysed that the Hydrophobicity and Anti-wear of2024aluminium surfaces formed by coupling bionic methods of convex domes and chemicaletching. The results show that the Hydrophobicity and Anti-wear are obviously enhanced,the friction coefficient is obviously reduced63.3%, and the abrasion resistance is enhancedon above surfaces. The original hydrophile surfaces were transformed into Hydrophobicsurafces，OCA. Obtaind135.8°. The coupling bionic surfaces were fabricated by adopting the method of experimentaldesign optimization to optimize morphological parameters, and the technologies of laserengraving and nano SiC/Ni composite electrodeposition on C1008carbon steel. The effect ofprocess parameters to the content of nano-SiC and the hardness and appearance of coatingwas discussed. It was analysed that The microstructure component and morphology ofcoupling bionic surfaces fabricated by laser engraving and nano SiC/Ni compositeelectrodeposition technologies. The microstructure components were examined. Theprinciple of morphologies formed was discussed. The results show that the Hydrophobicityand Anti-wear on the surfaces of coupling bionic parts is higher than the common partssurafces. The Anti-wear on the coupling bionic surfaces formed by convex domes andSiC/Ni composite coatings is higher than alone electrodeposition coatings or alone convexdomes.The technologies of coupling bionic surfaces fabricated were applied to worn partsrepair field. The coupling bionic repair process flow was established. The model worn partswere selected and repaired. The result of the real vehicle test shows that the abrasionperformance of coupling bionic repair parts was enhanced47.1%.