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首页> 外文期刊>Microporous and mesoporous materials: The offical journal of the International Zeolite Association >Dynamic measurements and wettability phenomena in mesoporous anodic films prepared on 1050 and 2024T3 aluminium alloys
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Dynamic measurements and wettability phenomena in mesoporous anodic films prepared on 1050 and 2024T3 aluminium alloys

机译：在1050和2024T3铝合金上制备的介孔阳极膜的动态测量和润湿性现象

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The wettability of mesoporous anodic films has until now been a parameter rarely studied although it remains crucial especially for sealing treatment following anodising. Wettability measurement is in fact complex as it depends on a number of process parameters relating to the three phases (mesoporous anodic film, deposited liquid and ambient gas). In the present study, an innovative experimental approach was first adopted involving measuring the characteristics of a deposited water drop (contact angle, chord length and height of the drop) in relation to time. Following this, a flow balance allowed the amount of water having infiltrated the mesopores to be determined for two types of anodic film, one tortuous (on an AA 2024T3 substrate), the other not (on an AA 1050 substrate). On the basis of models already available in the literature, a phenomenological mechanism (spreading, penetration and evaporation) was finally proposed and discussed especially with respect to the tortuosity and prior drying of mesoporous anodic films. (C) 2016 Elsevier Inc. All rights reserved.
机译：迄今为止，中孔阳极膜的润湿性一直是一个很少被研究的参数，尽管它对于阳极氧化后的密封处理尤其重要。实际上，润湿性测量很复杂，因为它取决于与三相有关的许多工艺参数（中速阳极膜，沉积的液体和环境气体）。在本研究中，首先采用了一种创新的实验方法，该方法涉及测量与时间相关的沉积水滴的特性（接触角，弦长和水滴的高度）。此后，通过流量平衡，可以确定两种类型阳极膜的水渗透到中孔中的一种，一种是曲折的（在AA 2024T3基板上），另一种不是（在AA 1050的基板上）。根据文献中已有的模型，最后提出并讨论了现象机理（扩散，渗透和蒸发），特别是关于中孔阳极膜的曲折性和事先干燥的讨论。 （C）2016 Elsevier Inc.保留所有权利。

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