| 冯成慧,王继普,赵连红,李金亮,赵伟,刘元海,王乾平.腐蚀环境下典型“钛‒铝”复合耳片腐蚀防护性能研究[J].装备环境工程,2022,19(8):50-58. FENG Cheng-hui,WANG Ji-pu,ZHAO Lian-hong,LI Jin-liang,ZHAO Wei,LIU Yuan-hai,WANG Qian-ping.Corrosion Protection Performance of Typical “Titanium-Aluminum” Composite Lugs in Corrosive Environment[J].Equipment Environmental Engineering,2022,19(8):50-58. |
| 腐蚀环境下典型“钛‒铝”复合耳片腐蚀防护性能研究 |
| Corrosion Protection Performance of Typical “Titanium-Aluminum” Composite Lugs in Corrosive Environment |
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| DOI：10.7643/issn.1672-9242.2022.08.008 |
| 中文关键词: 典型“钛-铝”复合耳片 腐蚀环境 腐蚀防护性能 电偶腐蚀中图分类号:TG174 文献标识码:A 文章编号:1672-9242(2022)08-0050-09 |
| 英文关键词:typical “titanium-aluminum” composite lugs corrosive environment corrosion protection performance galvanic corrosion |
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| Author | Institution |
| FENG Cheng-hui | The First Aircraft Institute, Aviation Industry Corporation of China, Ltd., Xi'an 710089, China |
| WANG Ji-pu | The First Aircraft Institute, Aviation Industry Corporation of China, Ltd., Xi'an 710089, China |
| ZHAO Lian-hong | Aviation Key Laboratory of Science and Technology on Structural Corrosion Protection and Control, China Special Vehicle Research Institute, Hubei Jingmen 448035, China |
| LI Jin-liang | The First Aircraft Institute, Aviation Industry Corporation of China, Ltd., Xi'an 710089, China |
| ZHAO Wei | Aviation Key Laboratory of Science and Technology on Structural Corrosion Protection and Control, China Special Vehicle Research Institute, Hubei Jingmen 448035, China |
| LIU Yuan-hai | Aviation Key Laboratory of Science and Technology on Structural Corrosion Protection and Control, China Special Vehicle Research Institute, Hubei Jingmen 448035, China |
| WANG Qian-ping | The First Aircraft Institute, Aviation Industry Corporation of China, Ltd., Xi'an 710089, China |
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| 中文摘要: |
| 目的 研究腐蚀环境下典型“钛–铝”复合耳片的腐蚀防护性能。方法 开展典型“钛–铝”双耳两层结构的加速腐蚀环境试验，共10个周期。采用扫描电镜(SEM)和能谱(EDS)分析结构的腐蚀形貌、腐蚀产物，研究“钛–铝”复合耳片结构的腐蚀防护性能。结果 在腐蚀环境下，“钛–铝”复合耳片结构中衬套周围异种金属连接部位的电偶腐蚀敏感性高，其他部位防护体系的耐蚀性较好。经过10个周期的加速试验，衬套周围铝合金结构发生较为严重的点蚀，各蚀坑扩展相连，形成较大蚀坑。在第10周期，典型“钛–铝”复合耳片铜衬套周围铝合金蚀坑处出现裂纹扩展，并发生腐蚀疲劳破坏。结论 增强典型“钛–铝”复合耳片结构的腐蚀防护措施，加强典型“钛–铝”复合耳片异种金属接触部位的日常维护，能有效提高结构的腐蚀防护能力。 |
| 英文摘要: |
| The purpose of this paper is to study the corrosion protection performance of the typical “titanium-aluminum” composite lugs in the corrosive environment. The accelerated corrosion environment test of the typical “titanium-aluminum” composite lugs is carried out. The accelerated corrosion environment test has a total of 10 cycles. The scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS) are used to analyze the corrosion morphology and corrosion products of the structure and to study the corrosion protection performance of the typical “titanium-aluminum” composite lugs. The results show that the joints of dissimilar metals around the bushing in the typical “titanium-aluminum” composite lugs is highly sensitive to galvanic corrosion. The protection system of other parts has better corrosion resistance. After 10 cycles of accelerated test, the aluminum alloy structure around the bushing is seriously pitted, and the etch pits are expanded and connected to form large etch pits. At the 10th cycle, crack propagation occurred at the etch pit of aluminum alloy around copper bushing, and corrosion fatigue failure occurred. To reinforce the corrosion protection measures of the typical “titanium-aluminum” composite lugs, and strengthen the daily maintenance of the contact parts of the typical “titanium-aluminum” compound lugs with dissimilar metals, can effectively improve the corrosion protection capability of the structure. |
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