| 电化学脱合金法在FeCrAl纤维毡表面制备纳米自组装结构 |
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| 引用本文： | 李亚宁,康新婷,汤慧萍,李广忠,张健.电化学脱合金法在FeCrAl纤维毡表面制备纳米自组装结构[J].稀有金属材料与工程,2009,38(5). |
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| 作者姓名： | 李亚宁 康新婷 汤慧萍 李广忠 张健 |
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| 作者单位： | 西北有色金属研究院,金属多孔材料国家重点实验室,陕西,西安,710016 |
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| 摘 要： | 为了改善纤维毡对催化剂的粘结强度,降低催化剂中活性组元的用量,采用电化学脱合金法在FeCrAl纤维毡表面制备了连续均匀的纳米多孔结构膜.利用EG&G PAR M273恒电位仪测量动态电势极化曲线和阳极极化曲线,研究了纳米多孔结构的形成机理.结果表明:纳米多孔结构膜形成的临界电压为1.2 V.在此条件下,Al元素和Cr元素被选择溶解,Fe被氧化成纳米结构膜.
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| 关 键 词： | 脱合金 纳米结构 FeCrAl纤维毡 机理 |
Self-Organized Nanostructure on FeCrAl Fiber Felt by Electrochemical Dealloying |
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| Li Yaning,Kang Xinting,Tang Huiping,Li Guangzhong,Zhang Jian.Self-Organized Nanostructure on FeCrAl Fiber Felt by Electrochemical Dealloying[J].Rare Metal Materials and Engineering,2009,38(5). |
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| Authors: | Li Yaning Kang Xinting Tang Huiping Li Guangzhong Zhang Jian |
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| Abstract: | To improve the adhesion of fiber felt to the catalyst and decrease the dosage of the active ingredient in the catalyst, an ordered nanoporous structure film with needle-like morphology on FeCrAl (Fe-20 at% Cr-5 at% Al) fiber felt alloy was fabricated by electrochemical dealloying in 1 mol/L NaOH. The mechanism of nanoporous-structure formation was investigated. Potentiodynamic polarization measurements and potentiostatic anodization experiments were conducted using an EG & G PAR M273 potentiostat. The resul... |
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| Keywords: | dealloying nanostructure FeCrAl fiber felt mechanism |
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