| abstract |
This invention relates to an aluminium vacuum evaporation film and its production method. The aluminium vacuum evaporation film of this invention has a surface area coefficient C of up to 1.00 x 10 -4 on its vacuum evaporation film surface and contains aluminium crystals having [1,1,0] orientation with respect to a base film surface in the aluminium thin film. Accordingly, it has high corrosion resistance under a high temperature and a high humidity environment. For this reason, when a capacitor is produced by use of the aluminium vacuum evaporation film of the present invention, sufficient moisture resistance can be obtained even if an external package is simple, and moisture resistance can be drastically improved if the same external package as that of the prior art capacitors is used. |