Abstract:

For the environment of the aircraft in use, the method of the corrosion medium composition and accelerated corrosion are studied. At 5 ℃, 25 ℃ and 50 ℃ separately, under four kinds of corrosion medium concentration, corrosion tests and corrosion fatigue tests of 30CrMnSiA steel and LY12CZ aluminum alloy are studied. The test curves show that the corrosion kinetics rules of them have followed linear relationship approximately and the corrosion rate of each cure basically remains unchanged. Thereby, we think that the corrosion medium composition of the environment in aerodrome is the best choice to aircraft calendar life test and the best mean of accelerated corrosion test is multiplying the corrosion medium composition of the environment in aerodrome, as the multiple become larger, the rate of corrosion is quicker. This conclusion is approved in this article.

Key words: expiration , and , protect , of , material,  , corrosion , fatigue,  , accelerated , corrosion , test,  , calendar , life