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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1997, Vol. 18 ›› Issue (1): 31-36.

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GALVANIC CORROSION OF HIGH STRENGTH ALUMINUM ALLOYS IN THE SOLUTION SIMULATING THE AIRCRAFT CORROSION ENVIRONMENT

Zhu Liqun, Li Weiping, Zhang Qi, Li Di, Zhang Yumei   

  1. Department of Material Science and Engineering,Beijing University of Aeronautics and Astronautics, Beijing, 100083
  • Received:1995-07-03 Revised:1996-01-10 Online:1997-02-25 Published:1997-02-25

Abstract:

The influence of different electrical contacts on the corrosion behavior of high strength aluminum alloys 2024 and 7075 by galvanic corrosion test, potentiodynamic polarization test and immersed test in the solution simulating the aircraft corrosion environment is discussed in the present study. The corrosion of 2024 and 7075 aluminum alloys begins with pitting and then expands to layer upon layer denuded corrosion. Contact materials affect the corrosion behavior significantly.

Key words: high-strength Al-alloys, galvanic, corrosion

CLC Number: