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| Method for Determining the Equivalent Acceleration Relationship of AcceleratedCorrosion Environmental Spectra of Metal Materials |
| Received:October 30, 2023 Revised:December 03, 2023 |
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| DOI：10.7643/issn.1672-9242.2023.12.008 |
| KeyWord:metal materials equivalent acceleration relationship accelerated corrosion marine atmospheric environment corrosion weightlessness corrosiveelectric quantity |
| Author | Institution |
| WANG Chang-kai |
Air Force Engineering University, Xi′an , China |
| ZHANG Teng |
Air Force Engineering University, Xi′an , China |
| HE Yu-ting |
Air Force Engineering University, Xi′an , China |
| ZHANG Tian-yu |
Air Force Engineering University, Xi′an , China |
| WANG Ming-jun |
The Second Military Representative Office of the Air Force Equipment Department in Xi′an, Xi′an , China |
| SUN Qing |
Air Equipment Military Representative Office in Jingdezhen, Jiangxi Jingdezhen , China |
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| Abstract: |
| The determination of the equivalent acceleration relationship is an important prerequisite for conducting accelerated corrosion tests in metal materials laboratories. However, the current determination method is greatly limited by experimental conditions and requires a lot of time and labor costs. To address the shortcomings of existing methods for determining the equivalent acceleration relationship of accelerated environmental spectra in laboratories, the work aims to propose a “double bridge connection” rapid determination method for the equivalent relationship between accelerated corrosion environmental spectra in aviation metal materials laboratories and the actual atmosphere. The weight loss of metal materials in corrosive environments was taken as the corrosion equivalent, and laboratory accelerated environmental spectra was compiled based on the method of “weighted concentration of environmental factors”. Based on the “equivalent bridge of electricity (current)”, the actual accumulated corrosion electricity in the atmospheric environment over the years was obtained. Through the three steps of determining the equivalent acceleration relationship based on the “weightlessness equivalent bridge”, the cumulative corrosion charge and corrosion weight loss of materials corresponding to actual atmospheric long-term monitoring data were calculated. By comparing the corrosion weight loss rate of metal materials in actual atmospheric and laboratory accelerated environments, the equivalent acceleration relationship of metal materials was obtained. This method can effectively overcome the shortcomings of existing research in obtaining the equivalent acceleration relationship (or equivalent acceleration relationship) between the laboratory accelerated corrosion environment spectrum and the actual environment due to the lack of on-site long-term atmospheric exposure samples and improper selection of equivalent parameters, providing support for accelerated corrosion test of metal materials in the laboratory. |
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