| YU Da-zhao,LIU Qi,FENG Li-jun,CHENG Xian-bin.Review on the Behavior and Mechanism of Fretting Corrosion Damage of Electrical Connectors[J],50(12):233-245 |
| Review on the Behavior and Mechanism of Fretting Corrosion Damage of Electrical Connectors |
| Received:January 18, 2021 Revised:April 28, 2021 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2021.12.023 |
| KeyWord:electrical connector electrical contact fretting fretting corrosion ECR |
| Author | Institution |
| YU Da-zhao |
School of Basic Sciences for Aviation, Naval Aviation University, Yantai , China |
| LIU Qi |
School of Basic Sciences for Aviation, Naval Aviation University, Yantai , China;Unit 92279 of the PLA, Yantai , China |
| FENG Li-jun |
Southwest Institute of Technology and Engineering, Chongqing , China |
| CHENG Xian-bin |
School of Basic Sciences for Aviation, Naval Aviation University, Yantai , China;Unit 92095 of the PLA, Taizhou , China |
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| Abstract: |
| During the service period of electrical connectors, the electrical contact interface is subjected to vibration and micro displacement easily, and under the action of corrosive atmosphere, fretting corrosion damage will occur. When the value of Electrical Contact Resistance (ECR) exceeds a certain threshold, it is determined to be a contact failure. With the development of industrial society and the progress of research methods, people’s understanding of electrical contact fretting corrosion has been gradually deepening. Therefore, the development and status of research on fretting corrosion from two aspects of behavior and mechanism was reviewed. In order to reduce the ECR, and improve the durability of electrical contacts, a lot of test and analysis has been done involving materials, coating type and thickness, contact force, amplitude, frequency, temperature, relative humidity and gas atmosphere and other factors, the more active research team and authors with their main job was introduced. The fretting corrosion model described by Antler and Bryant was introduced respectively, the formation mechanism of four different fretting regimes and the micro-morphology analysis were introduced in detail, and the influence on ECR was further discussed. Ten main factors affecting the fretting corrosion of electrical connectors were summarized from three aspects:material properties and behavior, contact conditions and environmental conditions. The vibration stress, temperature stress and electrical stress act on the electrical connector, which causes the complex electrical-thermal-mechanical multi-physical coupling effect in the internal contact parts of the electrical connector. The main methods used in the study of electrical contact fretting corrosion was also summarized, and the key research directions in the future was discussed from three perspectives:coupling effect of multiple factors, influence of marine environment and application of RF connectors. |
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