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 an-nual 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 cor-rosion 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 sur-face,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.
关键词
3D打印/铝合金/液冷板/表面处理/静态腐蚀/腐蚀速率
Key words
3D printing/aluminum alloy/liquid cooling plate/surface treatment/static corrosion/corrosion rate
维普
万方数据