Investigation on Distribution and Variable Rule for Corrosion Depth of Aluminum Alloy Specimen

Based on the experiment for LY12CZ aluminum alloy stimulator specimen under the typical service atmosphere and accelerated simulator environment in laboratory,which is usually used in making aircraft skin structures,the viewpoint of corrosion damage can be described by the corrosion depth is clarified and the corrosion depth is measured.The distribution function of the corrosion depth is given,the dispersity of the corrosion depth and relationship between the corrosion depth and the corrosion time are studied.And the corrosion equivalent relationship under these two environments is determined by contrasting the corrosion depth.