Corrosion Behavior of A286 Flap Lock in Accelerated Corrosive Environment in Laboratory

To study the corrosion behavior of A286 flap lock, accelerated environment corrosion tests for installed flap lock and uninstalled flap lock were carried out in laboratory. Corrosion behavior of A286 flap lock was analyzed through pit depth and torque difference between loosening and tightening. And the influences of assembly process and assembly stress on the corrosion behavior of flap lock were studied. The results show that the corrosion of installed flap lock was more serious than that of the uninstalled flap lock. The main corrosion form of uninstalled flap lock was contact corrosion, while the main corrosion forms of installed flap lock were contact corrosion and stress corrosion. Stress corrosion had greater influence on corrosion behavior of flap lock than contact corrosion.