Indoor simulation/rapid assessment device for comprehensive atmospheric environment corrosion

Abstract

The invention relates to an indoor simulation / rapid assessment device for comprehensive atmospheric environment corrosion, and belongs to the technical field of indoor simulation / rapid assessment devices for the corrosion of materials. The device comprises a control panel, a main work box, an ultraviolet lamp tube, a lifting mechanism, a temperature control and feedback system, a humidity control and feedback system and a hot and cold air system. The temperature control and feedback system, the humidity control and feedback system, the ultraviolet lamp tube and the hot and cold air system are controlled by the control panel to carry out environmental simulation on a test sample in the main work box. The device is simple in structure, low in manufacturing cost, high in work stability and accurate in test parameter control, not only can simulate the corrosion process of a material component under single conditions, such as constant temperature and constant humidity, alternation of wetting and drying and ultraviolet irradiation, but also can simulate the corrosion behaviors and processes of the material component under the synergistic action of multiple factors, and is particularly applicable to the indoor simulation and rapid assessment of the corrosion under the comprehensive action of the multiple factors in an atmospheric environment.

Description

[0001] technical field [0002] An indoor comprehensive simulation / rapid evaluation device for atmospheric environment corrosion belongs to the technical field of indoor simulation / rapid evaluation devices for material corrosion, and specifically relates to an indoor device for evaluating the atmospheric corrosion performance of various metal materials and metal matrix composite materials. Simulation / rapid evaluation device. Background technique [0003] The corrosion of materials or parts in atmospheric environment is called atmospheric corrosion. When a metal material component is placed in an atmospheric environment, due to the direct precipitation of moisture (rain, snow), or the condensation caused by atmospheric humidity or temperature changes and other reasons, an extremely thin layer of hard-to-see will be formed on its surface. When the water film reaches a thickness of 20-30 molecules, it can become the electrolyte liquid film required for electrochemical corrosio...

AI Technical Summary

Problems solved by technology

[0005] At present, the atmospheric corrosion test of materials is mainly divided into two types. One is to establish atmospheric corrosion test stations in various typical atmospheric environments to carry out coupon tests. Coupon tests are the most realistic corrosion data of materials in specific use environments, but coupons The test has disadvantages such as a large amount of coupons, a long test period, large data dispersion, inconvenient observation and testing at any time, and the inability to obtain corrosion data of the same sample traveling between two places or even multiple places. At the same time, it also requires a lot of manpower, material resources and Therefore, obtaining a set of corrosion data requires a large amount of capital investment and a long time, which is very poor for the timeliness and economy of design and development; the other is to simulate atmospheric corrosion and acceleration devices in the development room to simulate materials in the environment. For the corrosion behavior and process in the actual atmospheric environment, the indoor simulated accelerated test can simulate and evaluate the corrosion resistance of materials in a specific environment in a short period of time. It has the advantages of simple operation, accurate control of test conditions, and reproducible results. It has the advantages of good performance and the ability to simulate the corrosion behavior of materials under different environmental conditions at the same time, which is of great significance for the study of the corrosion behavior, mechanism and material development of materials in atmospheric environments.

[0006] As mentioned above, the environmental spectrum of atmospheric corrosion is very complex. Atmospheric corrosion is the result of the joint action of various factors. The study of atmospheric corrosion behavior and process cannot simply examine the influence of a single factor on material corrosion.

Images