本文選題：鋁合金 + 陽極氧化��； 參考：《材料保護》2017年01期

【摘要】：為了獲得膜層顯微硬度和粘接強度都較高的鋁合金陽極氧化工藝,通過陽極氧化在2024鋁合金表面制備氧化膜,根據(jù)正交試驗來確定氧化工藝參數(shù)對鋁合金陽極氧化膜顯微硬度和粘接性能的影響,采用X射線衍射儀(XRD)、X射線光電子能譜(XPS)、掃描電鏡(SEM)等分析氧化膜的相組成、化學(xué)組成和表面形貌,并研究電流密度對氧化膜厚度的影響以及氧化膜厚度對膜層顯微硬度和粘接強度的影響。結(jié)果表明:氧化工藝參數(shù)對氧化膜顯微硬度的影響程度為電流密度電解液中H_2SO_4濃度氧化時間;采用2種膠粘劑粘接后,氧化工藝參數(shù)對氧化膜粘接強度的影響程度有所不同,然而電流密度均為最主要的影響因素;經(jīng)過陽極氧化處理,鋁合金表面的顯微硬度和粘接強度均有很大提高,快固結(jié)構(gòu)膠的粘接強度比改性丙烯酸酯膠的高;鋁陽極氧化膜的厚度隨電流密度增加而增大,在適宜的電流密度范圍內(nèi)氧化膜厚度的增加會導(dǎo)致膜層顯微硬度和粘接強度的增大;氧化膜的相組成為非晶結(jié)構(gòu),主要元素為Al和O,均不因電流密度的變化而變化;鋁合金陽極氧化膜表面形貌的優(yōu)劣、孔隙率與氧化膜顯微硬度及粘接強度的大小密切相關(guān)。
[Abstract]:In order to obtain the anodizing process of aluminum alloy with high microhardness and bonding strength, the oxide film was prepared on the surface of 2024 aluminum alloy by anodic oxidation. According to the orthogonal test, the effect of oxidation process parameters on the microhardness and bonding properties of anodic oxide film of aluminum alloy was determined. The phase composition of the oxide film was analyzed by X-ray diffractometer, X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM) and so on. The effect of current density on the thickness of the oxide film and the influence of the thickness of the oxide film on the microhardness and bonding strength of the film were studied. The results show that the influence of oxidation process parameters on the microhardness of oxide film is the oxidation time of H_2SO_4 concentration in the current density electrolyte, and the influence of oxidation process parameters on the bonding strength of oxide film is different after two kinds of adhesives are used. However, the current density is the most important factor. After anodizing, the microhardness and bonding strength of aluminum alloy surface are improved greatly, and the bonding strength of fast solid structural adhesive is higher than that of modified acrylate adhesive. The thickness of aluminum anodic oxide film increases with the increase of current density, and the increase of oxide film thickness in the appropriate current density range will lead to the increase of microhardness and bonding strength of the film, and the phase composition of the oxide film is amorphous structure. The main elements are Al and O, which do not change with the change of current density, and the surface morphology and porosity of anodic oxide film of aluminum alloy are closely related to the microhardness and bonding strength of the film.
【作者單位】： 廣西農(nóng)產(chǎn)資源化學(xué)與深度利用重點實驗室(培育基地)玉林師范學(xué)院化學(xué)與食品科學(xué)學(xué)院;北京化工大學(xué)材料科學(xué)與工程學(xué)院;
【基金】：2016年度廣西高校中青年教師基礎(chǔ)能力提升項目(KY2016YB369) 2014年度玉林師范學(xué)院校級科研項目(2014YJYB06)資助
【分類號】：TG174.451

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