|
| Corrosion Resistance of Aluminum Alloy Cold Plate- Cooling Liquid in Airborne Electronic System |
| Received:September 11, 2016 Revised:March 15, 2017 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2017.03.009 |
| KeyWord:coolant erosion corrosion pit depth |
| Author | Institution |
| WANG Ying-qin |
Key Laboratory of corrosion protection and control of aviation technology, Jingmen , China |
| HE Wei-ping |
Key Laboratory of corrosion protection and control of aviation technology, Jingmen , China |
|
| Hits: |
| Download times: |
| Abstract: |
| Objective To reflect the relationship between the corrosion degree and the time of the aluminum alloy cold plate which is used in the cooling system of airborne electronic equipment reliably and provide technical support for the corrosion prevention and control for determination of the service life. Methods Constant temperature immersion test and scour test of aluminium alloy cold plate in constant temperature coolant according to the service environment characteristics of cold plate in the aircraft liquid cooling system to observe macro and micro morphology of specimen. Change of maximum pit depth was adopted to complete quantitative characterization of corrosion degree. Results After immersion experiment at constant temperature for 120 days, there was no significant change observed on macro and micro corrosion morphology as well as pit depth; after scour experiment for 320 hours, the macroscopic corrosion morphology had no change, the micro morphology of corrosion slightly increased, the corrosion pit depth increased steadily. Conclusion Based on comparison of the results of immersion and scouring tests, high speed flush coolant accelerates the corrosion of aluminum alloy plate by impurities accumulated and volatile component performance change. |
| Close |