A modified model for alumina membranes formed by gel-casting followed by dip-coating
A modified model for alumina membranes formed by gel-casting followed by dip-coating
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DOI：
10.1016/j.jeurceramsoc.2004.01.007
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发表时间：
2004-12
影响因子：
5.7
通讯作者：
A. Babaluo;M. Kokabi;M. Manteghian;R. Sarraf-Mamoory
中科院分区：
文献类型：
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作者：
A. Babaluo;M. Kokabi;M. Manteghian;R. Sarraf-Mamoory
采用浸涂法制备α-Al 2 O3薄膜涂层（顶层），并采用全析因试验设计进行研究。统计分析表明，两个变量的影响，浸渍时间和撤回速度的基板，是非常显着的，在确定的顶层的厚度（α<0.001）。提出了一个改进的模型，定量地解释了浸涂过程中多孔基体上顶层的形成过程。在该模型中，同时考虑了影响顶层厚度的所有变量的影响。对不同体积分数陶瓷粉悬浮液制备的α-Al 2 O3膜的实验数据与模型吻合较好。均方根偏差小于0.02。
α-Al2O3membrane coating (top layer) was formed by dip-coating and investigated based on full factorial design of experiments. Statistical analysis showed that the effects of two variables; dipping time and withdrawal speed of the substrate, were highly significant in determining the thickness of the top layers (α<0.001). A modified model was developed to interpret quantitatively the formation process of the top layers onto the porous substrate during dip-coating. In this model, the effects of all variables affecting the top layer thickness were considered simultaneously. The experimental data corresponding to α-Al2O3membranes obtained from suspensions with different volume fractions of ceramic powder showed good agreement with the model. The root mean square deviation was less than 0.02.