  The relationship between the interpore of anodic aluminum oxide (AAO)
template and the influencing factors of electrolyte, temperature and oxidation
voltage etc. was researched and summarized in this paper. It was pointed out
that the interpore was influenced mostly by electrolyte type and oxidation
voltage, and least by the electrolyte concentration and oxidation temperature.
The interpore of AAO template increases with the oxidation voltage increases.
By adjusting the electrolyte and oxidation voltage, a desired interpore of
template can be acquired. To acquire a large interpore template can use
electrolyte of phosphoric acid or chromic acid under a comparatively higher
oxidation voltage. To acquire a small interpore template (with interpore within
10nm) can use sulfate electrolyte under a comparatively lower oxidation voltage
or pulse voltage. Alternatively, oxidizing with lower oxidation voltage in a
mixed electrolyte of H2SO4 and Al2 (SO4)3, whereafter immersion in the mixture
of HCl and CuCl2 to corrode the template for some time, until the angles of
cell appear six holes with small pore diameter, the interpore of AAO template
decrease to about 0.6 times of the original.
