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OALib Journal期刊
ISSN: 2333-9721
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两次氧化条件对阳极氧化铝孔洞的影响
Keywords: 无机非金属材料,多孔氧化铝,两次氧化法,草酸溶液,孔洞特征
Abstract:
？采用两次阳极氧化法在草酸溶液中制备多孔氧化铝(aao),分别研究了电压、氧化时间及草酸溶液浓度对aao孔洞特征的影响。结果表明,在第一次氧化过程中孔间距随氧化电压的提高而增大,氧化时间和草酸溶液浓度几乎没有影响;在第二次氧化过程中时间、电压及草酸溶液浓度对孔间距基本无影响,但是随着氧化电压的增大aao孔径明显增大,孔洞呈六方阵列排布。此外,第二次氧化电压增大时孔洞形状由圆形到长条形、再到六边形变化;第二次氧化草酸溶液浓度增大至0.4mol/l时所制备的aao的相邻孔洞沿特定取向发生贯穿现象,甚至溶解,而孔洞整体分布有序性几乎不受影响。
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