-離子侵蝕作用下，Al-Cu-Li合金構件表面易出現(xiàn)點蝕、晶間腐蝕和剝落腐蝕現(xiàn)象。Al-Cu-Li合金的局部腐蝕主要歸因于合金相與合金基體間存在電勢差，進而導致在腐蝕介質中形成微型腐蝕原電池。綜述了Al-Cu-Li合金在NaCl溶液中的腐蝕行為以及熱處理工藝對合金耐腐蝕性能的影響，重點分析了粗大第二相顆粒和時效析出相對Al-Cu-Li合金腐蝕性能的影響，研究了典型第3代Al-Cu-Li（2A97-T3、2A97-T6、2060-T8和2099-T83）合金以及航空用常規(guī)高強鋁合金2024-T4在3種不同濃度NaCl溶液中的侵蝕行為以及在質量分數(shù)3.5%NaCl溶液中的電化學行為。綜合分析各試樣的微觀腐蝕形貌、腐蝕電化學參數(shù)以及腐蝕程度，最終得出各試樣的耐腐蝕性能由強至弱為：2A97-T3>2A97-T6>2024-T4>2060-T8>2099-T83。最后揭示了Al-Cu-Li合金在腐蝕介質中的腐蝕機理，總結了在海洋環(huán)境下鋁合金的防腐措施。本文為后續(xù)Al-Cu-Li合金防腐性能的發(fā)展和飛機耐腐蝕性能的提升提供了參考。;Al-Cu-Li alloy is a critical lightweight structural material in aviation and aerospace industry, which has become one of the key materials to manufacture the large aircraft structures in China. When the aircraft is in service in humid environments such as the ocean, it is vulnerable to be eroded by corrosive halide anions, and especially under the Cl- ion erosion, its surface of Al-Cu-Li alloy components is prone to pitting corrosion, intergranular corrosion and exfoliation corrosion. The local corrosion of Al-Cu-Li alloy is mainly attributed to the potential difference between the alloy phase and the alloy matrix, which leads to the formation of micro-corrosion battery in the corrosive medium. The corrosion behavior of Al-Cu-Li alloy in NaCl solution and the effect of heat treatment on the corrosion resistance of the alloy were reviewed. The effects of coarse second phase particles and aging precipitates on the corrosion properties of Al-Cu-Li alloy were analyzed. In addition, the corrosion behavior in NaCl solution of different contents and electrochemical behavior in 3.5wt% NaCl solution of typical third generation Al-Cu-Li (2A97-T3, 2A97-T6, 2060-T8 and 2099-T83) alloys and conventional high strength aluminum alloy 2024-T4 used in aviation were studied in NaCl solution. The micro-corrosion morphology, corrosion electrochemical parameters and corrosion degree of each sample were analyzed. Finally, the corrosion resistance of each sample was obtained, from strong to weak in an order of: 2A97-T3>2A97-T6>2024-T4>2060-T8>2099-T83. Finally, the corrosion mechanism of Al-Cu-Li alloy in a corrosive medium was revealed, and the anti-corrosion measures of aluminum alloys in marine environments were summarized. This reseach progress provides reference for the subsequent development of the Al-Cu-Li alloy corrosion protection process and the enhancement in the corrosion resistance of aircraft in humid environments."/>