THE HIGH-RESOLUTION OBSERVATION OF POROUS ANODIC FILMS FORMED ON ALUMINUM IN PHOSPHORIC-ACID SOLUTION

被引:34
作者
ONO, S
ICHINOSE, H
MASUKO, N
机构
[1] Institute of Industrial Science, The University of Tokyo, Tokyo
关键词
D O I
10.1016/0010-938X(92)90048-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The structure of porous anodic films before and after transformation caused by electron beam irradiation was studied by high resolution electron microscopy. The structure of as-produced anodic films formed in phosphoric acid solution was amorphous. Lattice images obtained from the film after irradiation revealed that a cell wall consisted of three layers of different crystallinity: an outermost amorphous layer next to a pore wall, an intermediate incomplete crystalline layer and an inner highly crystallized layer. Structure difference between three layers was explained by the quantitative difference of incorporated anions and protons.
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页码:841 / 850
页数:10
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