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| Corrosion Failure Analysis and Research on Control Measures of A Device in Marine Environment |
| Received:January 02, 2021 Revised:February 15, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.08.012 |
| KeyWord:ZL205A ZL114A marine environment corrosion failure anti-corrosion control measures |
| Author | Institution |
| ZHANG Chun-cheng |
Xi’an Bureau of Naval Equipment Department, Chengdu , China |
| ZHONG Lei |
Chengdu Lingchuan Special Industries Co., Ltd., Chengdu , China |
| HOU Dong |
Chengdu Lingchuan Special Industries Co., Ltd., Chengdu , China |
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| Abstract: |
| The purpose of this paper is to solve the corrosion failure problem of a device manufactured by ZL205A in marine environment. This paper analyzes the use environment of the ocean wave splash zone where the device is located, and conducts an in-depth search and research on the cause and mechanism of corrosion. Aiming at the cause of corrosion, targeted corrosion control measures have been formulated and verified by tests. The main reasons for the corrosion failure of the device are the insufficient anti-corrosion design and inadequate anti-corrosion measures in the marine environment with high salt and high humidity, resulting in galvanic corrosion, crevice corrosion, pitting corrosion, intergranular corrosion, stress corrosion, etc. The corrosion control measures formulated mainly include replacement of ZL114A material with better corrosion resistance, use of dissimilar metal isolation, improvement of structural design and strengthening of process control, strengthening of surface coating and maintenance. The verification test shows that the ZL114A sample with comprehensive protection measures has slight corrosion and good anti-corrosion effect, while the ZL205A sample with the original technical state has serious corrosion and poor anti-corrosion effect. The ZL114A device with comprehensive protection measures has significantly improved corrosion resistance in the marine environment, and the actual use effect is good. |
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