| 牟仁德,刘德林,陆峰,姜涛,何利民.铍青铜弹簧片应力腐蚀断裂研究[J].装备环境工程,2018,15(11):49-53. MU Ren-de,LIU De-lin,LU Feng,JIANG Tao,HE Li-ming.Stress Corrosion Fracture of Beryllium Bronze Spring Flake[J].Equipment Environmental Engineering,2018,15(11):49-53. |
| 铍青铜弹簧片应力腐蚀断裂研究 |
| Stress Corrosion Fracture of Beryllium Bronze Spring Flake |
| 投稿时间：2018-07-31 修订日期：2018-11-25 |
| DOI：10.7643/ issn.1672-9242.2018.11.009 |
| 中文关键词: 铍青铜 弹簧片 应力腐蚀 |
| 英文关键词:beryllium bronze spring flake stress corrosion |
| 基金项目: |
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| Author | Institution |
| MU Ren-de | 1. Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, Beijing Institute of Aeronautical Materials, Beijing 100095, China |
| LIU De-lin | 1. Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, Beijing Institute of Aeronautical Materials, Beijing 100095, China |
| LU Feng | 1. Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, Beijing Institute of Aeronautical Materials, Beijing 100095, China |
| JIANG Tao | 2. Failure Analysis Center of Aviation Industry Corporation of China, Beijing 100095, China |
| HE Li-ming | 1. Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, Beijing Institute of Aeronautical Materials, Beijing 100095, China |
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| 中文摘要: |
| 目的 研究传感器微动开关弹簧片应力腐蚀的机理，找到断裂原因。方法 对弹簧片进行断口形貌观察、能谱成分分析，并进行产品模拟腐蚀实验。结果 传感器内部意外进入雨水，在工作温度下形成湿热环境，开关盒中的游离氨在此环境下释放出来，在开关盒内部形成潮湿氨气氛，铍青铜弹簧片工作时凹面一侧承受静拉应力作用，从而在潮湿氨和拉应力共同作用下发生应力腐蚀开裂。结论 通过采用无氨酚醛塑料制备开关盒，弹簧片的应力腐蚀得到了有效预防。 |
| 英文摘要: |
| Objective To research the mechanism for stress corrosion of spring flake for microswitch of sensor and find out the cause of fracture. Methods Morphological observation of fracture, analysis of energy spectrum, and corrosion simulation of product were carried out. Results Free ammonia was released from switch box at the working temperature in the moist heat cir-cumstance which is caused by rainwater entering the sensor accidentally. The concave side of beryllium bronze spring flake was under tensile stress when it worked, so the spring flake fractured by stress corrosion. Conclusions Through using non-aminon phenolic plastic producing switch box, the stress corrosion of spring flake is effectively prevented. |
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