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| Static Corrosion of Aluminum Alloy Liquid Cooling Plate Made by 3D Printing in Coolant |
| Received:September 24, 2023 Revised:November 20, 2023 |
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| DOI：10.7643/issn.1672-9242.2024.02.009 |
| KeyWord:3D printing aluminum alloy liquid cooling plate surface treatment static corrosion corrosion rate |
| Author | Institution |
| LEI Tao |
The 10th Research Institute of CETC, Chengdu , China |
| LIU Xiuli |
The 10th Research Institute of CETC, Chengdu , China |
| CHEN Shaogao |
School of Materials Science and Engineering, Sichuan University of Science & Engineering, Sichuan Zigong , China |
| ZHENG Xingwen |
School of Materials Science and Engineering, Sichuan University of Science & Engineering, Sichuan Zigong , China;Key Laboratory of Material Corrosion and Protection of Sichuan Province, Sichuan Zigong , China |
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| Abstract: |
| The work aims to compare the static corrosion behavior of 3D printed aluminum alloy liquid cooling plates subject to different surface treatments in the coolant, and predict their static corrosion rate. The changes in the coolant and aluminum alloy were respectively monitored through pH value testing and corrosion surface morphology analysis, the corrosion kinetics parameters of the samples were measured through electrochemical methods, the corrosion rate and annual corrosion depth of the materials were obtained through weight loss experiments, and the corrosion products were analyzed through EDS. The pH of the coolant in all experimental groups showed an overall downward trend and the corrosion was clearly observed on the sample surface and concentrated at the defect location of the surface of sample. The corrosion rate of samples with different surface treatments varied, with a maximum difference of 16 times. The effective corrosion inhibitive components in the coolant participated in the formation of corrosion product films on the sample surface, depositing elements such as P and Ca on the surface. It is concluded that the annual corrosion depth of 3D printed aluminum alloy material in the coolant is relatively low, and its corrosion resistance is good, and liquid abrasive polishing or acid washing treatment can reduce the static corrosion rate of the investigated material in the coolant. |
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