本文選題：飛秒激光加工 + 浸潤(rùn)性調(diào)控��； 參考：《湖北工業(yè)大學(xué)》2017年碩士論文

【摘要】：本文選取鋁為基底,采用陽(yáng)極氧化技術(shù)與飛秒激光加工成功制備出微納結(jié)構(gòu)浸潤(rùn)性功能表面,通過(guò)觀察制備表面的微觀形貌,測(cè)試表面化學(xué)成分及潤(rùn)濕性,建立實(shí)驗(yàn)參量、微納米結(jié)構(gòu)與表面成分之間的對(duì)應(yīng)關(guān)系,分析表面功能、結(jié)構(gòu)、性質(zhì)間相互作用機(jī)理。相較于學(xué)界現(xiàn)今相對(duì)復(fù)雜難以批量制作的微納結(jié)構(gòu)浸潤(rùn)性表面,本文研究所采取的技術(shù)方法具有較大的應(yīng)用價(jià)值。具體內(nèi)容如下:(1)通控制實(shí)驗(yàn)條件得到微納結(jié)構(gòu)表面規(guī)律變化的樣品,以研究陽(yáng)極氧化對(duì)鋁基材料表面浸潤(rùn)性能影響與改變機(jī)理。通過(guò)SEM與EDS對(duì)不同表面微觀結(jié)構(gòu)特征及化學(xué)成分組成進(jìn)行觀察測(cè)試,結(jié)合接觸角相關(guān)模型與理論進(jìn)行分析解釋。結(jié)果表明,陽(yáng)極氧化微孔表面改變了材料的表面結(jié)構(gòu),陽(yáng)極氧化孔影響了材料與液滴的接觸模式。表面凹凸層次結(jié)構(gòu)使樣品表面浸潤(rùn)性能發(fā)生變化,隨著陽(yáng)極氧化孔徑的增長(zhǎng),樣品表面浸潤(rùn)性能由親水向疏水方向變化。(2)通過(guò)對(duì)飛秒激光加工特性,系統(tǒng),工藝的研究,利用飛秒激光在鋁基表面構(gòu)造出微納米結(jié)構(gòu),分析不同的飛秒激光能量制備的鋁基超疏水功能表面特性,并探究了其浸潤(rùn)性能變化的方式與原理。飛秒激光加工后的樣品在時(shí)效后,鋁基材料表面最終穩(wěn)定的浸潤(rùn)性狀態(tài)與飛秒激光脈沖能量相關(guān)。隨著脈沖能量的升高,表面接觸角由原始70°轉(zhuǎn)變?yōu)?50°以上,在變化過(guò)程中,對(duì)不同能量加工條件下的鋁基表面形貌,粗糙度及化學(xué)成分組成進(jìn)行分析研究,結(jié)果表明:激光加工后的樣品浸潤(rùn)性由親水狀態(tài)往疏水狀態(tài)轉(zhuǎn)變,最終達(dá)到超疏水狀態(tài)。在不同脈沖能量區(qū)間均得到超疏水表面,但其表面微觀結(jié)構(gòu)存在非周期性或周期性結(jié)構(gòu)的差異,因此疏水性能形成原理有所不同。
[Abstract]:In this paper, anodic oxidation technique and femtosecond laser processing were used to fabricate the micro-nano structure wettable functional surface. The microstructure of the prepared surface was observed, the chemical composition and wettability of the prepared surface were measured, and the experimental parameters were established. The relationship between microstructures and surface composition is analyzed, and the interaction mechanism among surface functions, structures and properties is analyzed. Compared with the infiltrating surface of micro / nano structure which is relatively complex and difficult to be fabricated in the academic field nowadays, the technical method adopted in this paper has great application value. In order to study the effect of anodic oxidation on the surface wettability and the mechanism of the change of the surface wettability of aluminum based materials, the samples with varying surface regularity were obtained under the control of the experimental conditions. The microstructure and chemical composition of different surfaces were observed and tested by SEM and EDS, and the contact angle model and theory were used to analyze and explain them. The results show that the surface structure of the material is changed and the contact mode between the material and the droplet is affected by the anodizing pore. The surface wettability of the sample changed with the increase of anodizing pore size. The surface wettability of the sample changed from hydrophilicity to hydrophobicity through the study of femtosecond laser processing characteristics, system and technology. Using femtosecond laser to construct micro-nano structure on aluminum substrate surface, the surface characteristics of superhydrophobic function of aluminum base prepared by different femtosecond laser energy were analyzed, and the ways and principles of its wettability change were investigated. The final stable wettability of Al based material surface after aging is related to the pulse energy of femtosecond laser. With the increase of pulse energy, the surface contact angle changes from 70 擄to more than 150 擄. In the process of change, the surface morphology, roughness and chemical composition of aluminum matrix under different energy processing conditions are analyzed and studied. The results show that the wettability of the samples after laser processing changes from hydrophilic state to hydrophobic state and finally reaches superhydrophobic state. Superhydrophobic surfaces are obtained in different pulse energy ranges, but the surface microstructure is different in aperiodic or periodic structures, so the formation principle of hydrophobic energy is different.
【學(xué)位授予單位】：湖北工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TG174.4

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本文編號(hào)：1829219