The Study Of Interface Effect And Fabrication On The Bionic Coupling Structure By Both Sandblasting And Pulse Deposition

Based on the study of the microscopic structure of the biological surface in nature,it is found that various excellent characteristics of the biological surface are inextricably linked with the surface microstructure characteristics,including the lotus leaf papillae composite structure showing self-cleaning,the bristles of the blisters on the surface of the legs show hydrophobic non-stick properties,and the drag-reducing characteristics of the V-shaped wrinkle structure with a rough surface of the shark skin.In this context,according to bionics research on the surface structure of lotus leaves,loquat leaves and other hydrophobic properties,it is found that micro-scale roughness is an important factor affecting the wetting properties of the material surface.Based on the relevant research theories,a bionic structure was prepared on the surface of 304 stainless steel using the sandblasting process and the sandblast-brush plating coupling process,and the interface effects under the two process methods were studied.A simple sandblasting process and a sandblast-brush plating coupling process act on the surface of the S30408 stainless steel sample to construct an irregular rough structure and a multi-scale biomimetic coupling mastoid structure to study the effect of various structures on the wetting effect of stainless steel surfaces and to make materials The surface changes from hydrophilic to hydrophobic properties and analyzes the mechanism of wettability change.With the aid of test methods,the optimal conditions for the transition from hydrophilicity to hydrophobicity on the surface of 304 stainless steel were studied under different sandblasting process parameters.The surface morphology,dynamic and static wettability,hardness,roughness,surface composition and corrosion resistance of the prepared sample were compared and studied to effectively improve the hydrophobicity,hardness,roughness and hydrochloric acid corrosion resistance of the 304 stainless steel surface.The test methods and data in this paper provide references for the research on micro-machining and surface modification of metal surfaces.