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| 題 名 | 二次相對於AC84鎂合金微弧氧化處理行為之影響=Effects of Second Phases on the Micro-Arc Oxidation Behavior of AC84 Magnesium Alloy |
|---|---|
| 作 者 | 邱麒樺; 黃詩晏; 褚喻仁; 李岳聯; | 書刊名 | 防蝕工程 |
| 卷 期 | 39:1 2025.03[民114.03] |
| 頁 次 | 頁11-17 |
| 分類號 | 440.39 |
| 關鍵詞 | 不燃型鎂合金; 微弧氧化; 伽凡尼腐蝕; Non-flammable magnesium alloy; Micro-arc oxidation; Galvanic corrosion; |
| 語 文 | 中文(Chinese) |
| DOI | 10.6376/JCCE.202503_39(1).0002 |
| 中文摘要 | 本研究是利用AZ31商用鎂合金及不燃型鎂合金AC84進行微弧氧化(Micro-Arc Oxidation, MAO)技術進行表面改質技術,採用矽酸及磷酸系統電解液,並調整電壓影響膜層變化,並使用掃描式電子顯微鏡(Scanning Electron Microscope, SEM)觀測膜層之微結構變化,以及用電化學交流阻抗(Electrochemical Impedance Spectroscopy, EIS)分析膜層特性。實驗結果顯示,在150 V和200 V的定電壓條件下,AZ31所形成的微弧氧化膜層具有較佳的抗蝕性能。然而,當電壓升至250 V時,AC84的抗蝕性超越了AZ31。深入分析兩種鎂合金之膜層微結構,發現AC84的二次相在250 V以下的微弧氧化過程中,導致膜層表面孔洞分布不均勻且膜層厚度較AZ31薄。可能是造成AC84在低電壓下抗蝕性較差的主要原因。 |
| 英文摘要 | This study used AZ31 magnesium alloy and non-combustible AC84 magnesium alloy for micro-arc oxidation (MAO) technology. A silicate-phosphate electrolyte system was employed, and the electrical parameters were modified to examine the alterations in the coating. Scanning electron microscopy (SEM) was employed to investigate the microstructural alterations of the coating, while electrochemical impedance spectroscopy (EIS) was utilized to evaluate the coating's characteristics. The results of the study showed that the MAO coating formed on AZ31 at constant voltages of 150 V and 200 V demonstrated superior corrosion resistance compared to AC84. Upon elevating the voltage to 250 V, AC84 exhibited enhanced corrosion resistance relative to AZ31. The analysis of the microstructures of the coatings on both magnesium alloys indicated that the secondary phase in AC84 resulted in a non-uniform pore distribution on the coating surface and a thinner coating compared to AZ31 during the MAO process at voltages below 250 V. This could be the primary cause of AC84's reduced corrosion resistance at lower voltages. |
本系統中英文摘要資訊取自各篇刊載內容。