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- 저자 : Jinkai Xu (검색결과 2 건)
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Zhongxu Lian,Jinkai Xu,Peng Yu,Zhanjiang Yu,Zuobin Wang,Huadong Yu 대한금속·재료학회 2020 METALS AND MATERIALS International Vol.26 No.11
As two typical special wettability materials, superhydrophobic and superoleophobic surfaces are the most widely studiedinterfaces because of their excellent water-or oil-repellent ability. However, how to use a simple strategy to obtain thosesurfaces is still a huge challenge. On the other hand, corrosion tend to occur while using metallic materials, resulting in poorperformance of metallic equipment and even serious safety hazards. In this work, a one-step strategy of nanosecond laserablation was presented to construct the microstructures acquired by superhydrophobic and superoleophobic aluminum alloysurfaces. The superhydrophobic and superoleophobic properties of microstructured surfaces were obtained via high temperatureand fluorosilane treatments on laser-processed surfaces, respectively, and the oil-repellent and corrosion resistanceproperties of both substrates were studied. The potentiodynamic polarization test shows that the superoleophobic surfacehad a better corrosion resistance than the superhydrophobic surface, which will provide an effective protection for the barealuminum alloy. Meanwhile, the superoleophobic surface had good chemical stability. It is believed that the nanosecond lasertechnology can offer an effective strategy for constructing the microstructures acquired by large-area superhydrophobic andsuperoleophobic surfaces on aluminum alloy materials.
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Zhongxu Lian,Yi Cheng,Jinkai Xu,Jinlong Xu,Wanfei Ren,Yanling Tian,Huadong Yu 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.10 No.5
In this work, we present a simple technique for green fabrication of slippery liquid-infused surface (SLIS) with anti-friction property on various metallic substrates using wire electrical discharge machining. Micro-crater structures were successfully obtained, and the surface had excellent liquid-repellent property after modification and infusion of silicone oil. A wide range of liquids including water, juice, coffee, tea, vinegar, albumin, glycerol, and ketchup could easily slid down the surface tilted at an angle of 10° without leaving any trace. The influences of the number of cutting step on the morphology and wettability of the surface were studied comprehensively. Further, the tribological properties of the surface were analyzed and the results showed that the SLIS had a decrease of 73.2% in friction coefficient as compared to that of the smooth surface. By studying the morphology of the worn surfaces, it is found that the SLIS had slight abrasive wear behavior. To demonstrate the precision processing ability of this technology, we fabricated slippery sub-millimeter-scale asymmetric bump arrays, and the experiment results showed that the asymmetric bump arrays had excellent water harvesting ability at low temperatures. This kind of environment-friendly precision machining technology will promote the practical applications of metallic functional materials.
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