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姓名	邱奕緯(Yi-wei Chiu)  查詢紙本館藏	畢業系所	機械工程學系
論文名稱	不同陽極處理對7075-T6及7050-T6鋁合金耐腐蝕性質及疲勞強度分析
相關論文	★ 7005與AZ61A拉伸、壓縮之機械性質研究 ★ 雷射去除矽晶圓表面分子機載污染參數的最佳化分析 ★ 球墨鑄鐵的超音波檢測 ★ 模具溫度對TV前框高亮光澤產品研討 ★ 高強度7075-T4鋁合金之溫間成形研究 ★ 鎂合金燃燒、鑽削加工與表面處理之研究 ★ 純鈦陽極處理技術之研發 ★ 鋁鎂合金陽極處理技術之研發 ★ 電化學拋光處理、陽極處理中硫酸流速與封孔處理對陽極皮膜品質之影響 ★ 電解液溫度與鋁金屬板表面粗糙度對陽極處理後外觀的影響 ★ 製程參數對A356鋁合金品質的影響及可靠度的評估 ★ 噴砂與前處理對鋁合金陽極皮膜品質的影響 ★ 鎂合金回收重溶之品質與疲勞性質分析 ★ 鋁合金熱合氧化膜與陽極氧化膜成長行為之研究 ★ 潤滑劑與製程參數對Al-0.8Mg-0.5Si鋁合金擠壓鑄件的影響 ★ 摩擦攪拌製程對AA5052鋁合金之微觀組織及對陽極皮膜的影響
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摘要(中)	本研究對7075-T6及7050-T6兩種材料進行三種不同的陽極處理，分別是一般陽極、低定電流硬化陽極和高定電流硬化陽極，陽極氧化膜的厚度皆控制在10um左右。封孔處理後對材料進行腐蝕測試，並記錄各材料的腐蝕電位(Ecor)及腐蝕速率(Icor)。利用光電子能譜儀(XPS)分析陽極皮膜的表面層和介面層(氧化膜/基材)組成分，電子顯微鏡(SEM)觀察氧化膜表面型態，探討其結果與耐蝕能力之關係。 各材料皆會加工成試棒以進行旋轉梁疲勞試驗，並記錄其疲勞曲線。陽極後的材料會分成內外兩部分進行氫含量測試。最後，利用材料中之氫含量分布及材料表面之陽極氧化膜探討對材料疲勞強度之影響。 實驗結果顯示，陽極氧化鋁孔洞大小、間距以及形態都影響著腐蝕性質。疲勞強度則與陽極氧化膜品質以及材料內部之氫含量有關。
摘要(英)	In this study, Al7075 and Al7050 alloy samples were prepared for three Anodization treatment(Anodization、Hard Anodization(low current density)、Hard Anodization(high current density) ) to obtain a fixed anodic aluminum oxide (AAO) film thickness(10um). The anodized and sealed samples were observed and analyzed by X-ray Photoelectron(XPS) , Scanning electron microscope(SEM),hydrogen concentration detector and potentiodynamic test.The samples were also carrying out rotating bending fatigue test. We found the factors influenced the corrosion resistance of two alloy samples included pore numbers and/or volume,constituted oxide phases and voids formed in the AAO film.And the anodized/sealed Al7050 alloy samples exhibited the greatest fatigue strength at 107 life cycles among all samples. Hydrogen content remained in the samples’ matrix mainly
關鍵字(中)	★ 7075-T6 ★ 7050-T6 ★ 陽極處理 ★ 光電子能譜儀XPS ★ 陽極極化曲線 ★ 旋轉梁疲勞試驗	關鍵字(英)
論文目次	摘要 ........................................................................................................................................ i Abstract .............................................................................................................................. ii 圖目錄 ................................................................................................................................... v 表目錄 ................................................................................................................................ viii 第一章 前言 ......................................................................................................................... 1 第二章 文獻回顧 ................................................................................................................. 2 2-1 陽極處理 ................................................................................................................ 2 2-1-1 陽極膜種類 ................................................................................................. 2 2-1-2 傳統陽極膜生長機制 .................................................................................. 3 2-1-3 陽極膜生長階段電壓與時間曲線 ............................................................... 5 2-1-4 近期的陽極氧化膜生長機制....................................................................... 9 2-1-5 磷酸溶液的陽極處理 ................................................................................ 11 2-2 硬化陽極處理製程的介紹 ................................................................................... 14 2-2-1 硬化陽極處理與一般陽極處理比較 ......................................................... 14 2-2-2 兩階段硬化陽極 ........................................................................................ 15 2-3 合金元素對鋁合金陽極氧化膜之影響 ................................................................ 18 2-4 陽極膜封孔 .......................................................................................................... 23 2-4-1 熱水封孔 ................................................................................................... 23 2-4-2 鉻酸鹽封孔 ............................................................................................... 24 2-4-3 醋酸鎳封孔 ............................................................................................... 24 2-4-4 熱水封孔與含醋酸鎳成份溶液封孔差異 ................................................. 25 2-5 氯離子於陽極氧化材料中之腐蝕理論 ................................................................ 26 2-5-1 陽極氧化鋁合金之腐蝕情形..................................................................... 27 2-5-2 不同陽極氧化膜的耐腐蝕性質 ................................................................. 30 2-5-3 不同封孔處理對耐腐蝕性質的影響 ......................................................... 31 2-6 鋁合金之析出硬化 ............................................................................................... 33 2-6-1 7xxx系列鋁合金熱處理程序及析出強化機制 ....................................... 33 2-6-2 Al-Zn-Mg-(Cu)析出物種類 ..................................................................... 36 2-7 疲勞破壞的原理及影響 ....................................................................................... 37 2-7-1 疲勞破壞的過程 ........................................................................................ 38 2-7-2 疲勞裂紋初始機構 .................................................................................... 38 2-7-3 疲勞裂紋成長機構 .................................................................................... 39 2-7-4 疲勞最終破壞 ............................................................................................ 40 2-7-5 疲勞應力分析及旋轉樑試驗原理 ............................................................. 46 2-8 一般陽極處理與硬化陽極處理對疲勞強度之影響 ............................................. 48 2-9 氫含量對於材料的疲勞性質影響 ........................................................................ 50 iv 2-9-1 陽極處理時氫離子的行為 ........................................................................ 50 2-9-2 疲勞試驗時氫離子之行為及影響 ............................................................. 51 第三章 實驗方法與步驟 .................................................................................................... 54 3-1 實驗材料 .............................................................................................................. 54 3-2 實驗設備 .............................................................................................................. 54 3-3 實驗步驟 .............................................................................................................. 55 第四章 結果與討論 ............................................................................................................ 60 4-1 陽極行為與陽極氧化膜分析 ............................................................................... 61 4-1-1 陽極處理之電壓-時間圖 ........................................................................... 61 4-1-2 陽極氧化膜SEM觀察 .............................................................................. 64 4-1-3 XPS分析 .................................................................................................... 65 4-1-4 陽極氧化膜之動態極化曲線分析 ............................................................. 69 4-2 材料的疲勞性質分析 ........................................................................................... 73 4-2-1 陽極處理前後基地氫含量變化 ................................................................. 73 4-2-2 試棒經陽極處理後的疲勞性質 ................................................................. 74 4-2-3 疲勞試棒的破斷面觀察 ............................................................................ 76 第五章 結論 ..................................................................................................................... 77 參考文獻 ............................................................................................................................. 79
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指導教授	施登士	審核日期	2015-1-30
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