Accelerated test method for simulating atmospheric corrosion

Abstract

The invention discloses an accelerated test method for simulating atmospheric corrosion. The method specifically comprises the steps: preparing a spray solution through NaSO4 and NaCl, carrying out asalt spray test on a simulation part through the spray solution, and then performing a drying test on the simulation part; performing a humidity test on the simulation part, and finally performing a salt spray test, the drying test and the humidity test repeatedly and alternately. According to the accelerated test method for simulating atmospheric corrosion provided by the embodiment of the invention, Na2SO4 and NaCl are used for preparing the spraying solution; the pH value can be adjusted according to the environment of the simulated region, and the erosion effect of SO42- and Cl- on the simulation part can be simulated according to the contents of SO42- and Cl- in the simulation region environment; and the salt spray test, the drying test and the humidity test are alternately carried out to simulate the erosion effect of different climates or weathers in the natural environment on the simulation part, thereby facilitating the improvement of the correlation between the acceleration test and the erosion in the natural environment.

Description

technical field [0001] The invention relates to the field of atmospheric corrosion tests, in particular to an accelerated test method for simulating atmospheric corrosion. Background technique [0002] With the rapid development of the automobile industry, the requirements for the service life of automobiles in the natural atmospheric environment are constantly increasing, and the service life of automobiles mainly depends on the service life of its various parts. There are many factors that affect the service life of auto parts. Since the car is in an external corrosive environment no matter whether it is running or stopped, corrosion factors account for a large proportion of the many factors that affect the service life of auto parts. Therefore, more and more countries pay more and more attention to the corrosion research of auto parts. [0003] At present, the salt spray corrosion research standards of auto parts in my country are basically carried out by foreign standar...

AI Technical Summary

Problems solved by technology

However, the corrosion damage behavior of materials in the natural environment is a long-term and continuous process. The test cycle is long, slow and costly, which cannot meet the urgent needs of test research and production.

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