Grey Correlation Research on Atmospheric Corrosion Environment Factors of Aircraft LY12CZ Aluminum Alloy

The atmospheric environment causing atmospheric corrosion of aircraft LY12CZ structure is viewed as a grey system. The weather and medium environment factor data of typical climate territories were statistically analyzed to calculate the atmospheric corrosion rate data of aircraft LY12CZ aluminum alloy in different corrosion years. The grey correlation of environment factors was analyzed based on grey system theory with the aim to quantitatively analyze the influence degree of different environment factors on the atmospheric corrosion rate of LY12CZ.The analysis results show that the number of fog days and the Cl- concentration are the strongest inflence factors on the atmospheric corrosion rate of LY12CZ among all the weather and medium environment factors.