| 铍青铜弹簧片应力腐蚀断裂研究 |
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| 引用本文： | 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. |
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| 作者姓名： | 牟仁德 刘德林 陆峰 姜涛 何利民 |
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| 作者单位： | 1.北京航空材料研究院 航空材料先进腐蚀与防护航空科技重点实验室，北京 100095,1.北京航空材料研究院 航空材料先进腐蚀与防护航空科技重点实验室，北京 100095,1.北京航空材料研究院 航空材料先进腐蚀与防护航空科技重点实验室，北京 100095,2.中航工业失效分析中心，北京100095,1.北京航空材料研究院 航空材料先进腐蚀与防护航空科技重点实验室，北京 100095 |
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| 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。
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| 关 键 词： | 铍青铜 弹簧片 应力腐蚀 |
| 收稿时间： | 2018/7/31 0:00:00 |
| 修稿时间： | 2018/11/25 0:00:00 |
Stress Corrosion Fracture of Beryllium Bronze Spring Flake |
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| MU Ren-de,LIU De-lin,LU Feng,JIANG Tao and HE Li-ming.Stress Corrosion Fracture of Beryllium Bronze Spring Flake[J].Equipment Environmental Engineering,2018,15(11):49-53. |
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| Authors: | MU Ren-de LIU De-lin LU Feng JIANG Tao and HE Li-ming |
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| Institution: | 1. Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, Beijing Institute of Aeronautical Materials, Beijing 100095, China,1. Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, Beijing Institute of Aeronautical Materials, Beijing 100095, China,1. Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, Beijing Institute of Aeronautical Materials, Beijing 100095, China,2. Failure Analysis Center of Aviation Industry Corporation of China, Beijing 100095, China and 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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| Abstract: | 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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| Keywords: | beryllium bronze spring flake stress corrosion |
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