多孔發泡鎳電解處理與其拋光前後物理性質之研究

Study on the Electropolishing Treatment of Porous Foamed Nickel and the Change of Related Physical Properties

邱梓瑜(Chiu Tzu-Yu)

指導教授 ： 吳瑋特 ； 蔡循恒

國立屏東科技大學/工學院/生物機電工程系所/碩士(2021年)

https://doi.org/10.6346/NPUST202100482

摘要

多孔泡沫鎳(Porous Foam Nickel)在熱交換領域具有廣泛的應用，是非常好過濾性材料，比起傳統熱交換過濾材料，具有密度小、表面積大、滲透等特性。本研究使用電解拋光的方式改善多孔泡沫鎳的孔隙毛刺，以電源供應器與多功能電錶組成，量測電化學反應曲線的系統，使用直流電源供應器進行電解拋光實驗，並根據均勻設計表設定拋光參數，電解液濃度1M至6M與電壓12.5V至40V及拋光時間1分鐘至7分鐘，電極間距1到4公分等拋光參數，使用電子磅秤量測拋光前後工件重量，在No.10電壓35V、電解液濃度2M，拋光時間1min，電極間距1cm，工件重量差異最大，但在No.9電壓32.5V、電解液濃度1M，拋光時間7min，電極間距2cm，工件重量顯示負值，因鎳電解拋光後，產生較厚的氧化膜所導致，接著使用水滴滴定並配合影像處理計算紅墨水擴散面積，結果顯示，No.6電壓25V、電解液濃度3M，拋光時間7min，電極間距3cm為此次電解拋光最佳參數。

關鍵字

多孔泡沫鎳 ； 熱交換 ； 電解拋光 ； 物理特性

並列摘要

Porous Foam Nickel has a wide range of applications in the field of heat exchange. It is a very good filter material. Compared with traditional heat exchange filter materials, it has the characteristics of low density, large surface area, and permeability. This study uses electrolytic polishing to improve the pore burrs of porous nickel foam. It is composed of a power supply and a multi-function meter to measure the electrochemical reaction curve. The DC power supply is used for electrolytic polishing experiments and is set according to the uniform design table. Polishing parameters, electrolyte concentration 1M to 6M, voltage 12.5V to 40V, polishing time 1 minute to 7 minutes, electrode spacing 1 to 4 cm and other polishing parameters, use an electronic scale to measure the weight of the workpiece before and after polishing, at No. 10 voltage 35V , Electrolyte concentration 2M, polishing time 1min, electrode spacing 1cm, workpiece weight difference is the largest, but in No. 9 voltage 32.5V, electrolyte concentration 1M, polishing time 7min, electrode spacing 2cm, workpiece weight shows a negative value, due to nickel electrolysis After polishing, it is caused by a thick oxide film. Then use water drop titration and image processing to calculate the red ink diffusion area. The results show that No.6 voltage is 25V, electrolyte concentration is 3M, polishing time is 7min, and the electrode spacing is 3cm. The best parameters for electrolytic polishing.

並列關鍵字

Porous Foam Nickel ； Heat exchange ； Electrochemical polishing ； Physical characteristics

參考文獻

參考文獻

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