|
| Corrosion Protection Performance of Typical “Titanium-Aluminum” Composite Lugs in Corrosive Environment |
| |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2022.08.008 |
| KeyWord:typical “titanium-aluminum” composite lugs corrosive environment corrosion protection performance galvanic corrosion |
| Author | Institution |
| FENG Cheng-hui |
The First Aircraft Institute, Aviation Industry Corporation of China, Ltd., Xi'an , China |
| WANG Ji-pu |
The First Aircraft Institute, Aviation Industry Corporation of China, Ltd., Xi'an , China |
| ZHAO Lian-hong |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Protection and Control, China Special Vehicle Research Institute, Hubei Jingmen , China |
| LI Jin-liang |
The First Aircraft Institute, Aviation Industry Corporation of China, Ltd., Xi'an , China |
| ZHAO Wei |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Protection and Control, China Special Vehicle Research Institute, Hubei Jingmen , China |
| LIU Yuan-hai |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Protection and Control, China Special Vehicle Research Institute, Hubei Jingmen , China |
| WANG Qian-ping |
The First Aircraft Institute, Aviation Industry Corporation of China, Ltd., Xi'an , China |
|
| Hits: |
| Download times: |
| Abstract: |
| 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. |
| Close |
|
|
|