飞机用LY12CZ材料大气腐蚀环境因子灰色关联性研究

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

影响LY12CZ材料大气腐蚀的大气环境是灰色系统。选取典型地域的大气环境因子(气象环境和介质环境)统计数据,并利用LY12CZ材料不同腐蚀年限的大气腐蚀速率计算结果,依据灰色系统理论对影响LY12CZ材料大气腐蚀速率的环境因子灰色关联性进行计算分析,量化研究不同环境因子对LY12CZ材料大气腐蚀速率的影响程度。结果表明,雾日数和Cl^-浓度分别为气象环境因子和介质环境因子中对LY12CZ的大气腐蚀速率影响最大的环境因子。

The atmospheric environment causing atmospheric corrosion of aircraft I.Y12CZ 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 CI concentration are the strongest inflence factors on the atmospheric corrosion rate of LY12CZ among all the weather and medium environment factors.