Electrolytic capacitor is one of the three basic electronic components, capacitor anode aluminum foil is the key material for high quality electrolytic capacitors.

Evolvement of microstructures and textures in the preparation of high voltage anode aluminum foil;

The conventional production technology for aluminum foil was modified by means of increasing cold rolling passes and rising intermediate annealing temperature to prepare ultra-thin high voltage anode aluminum foil.

In order to improve the precision of parameters measurement on the micro-morphology of anodic foil of middle-high voltage for capacitor,a comprehensive analytical method was designed by computer image analytical technology,and actual surface micro-morphology was observed directly by SEM after electrolytic polishing treatment.