本次實驗藉由EMF量測法觀察液態Zn-Al合金在XAl ≤ 0.2084濃度範圍且於430 oC至600 oC之溫度區間之熱力學性質，而實驗所使用之系統為：
Mo, Al(s)/ LiCl-KCl-AlCl3/ Zn-Al(l), Mo
實驗結果歸納其活性係數依含鋁濃度範圍與溫度關係可分別適用之關係式為：
lnγAl=(2159.171/T -1.351)+(1316.614/T -3.052)⋅XAl
上式適用於XAl ≤ 0.1099，703K ≤ T ≤ 858K。
lnγAl=(2103.964/T -1.293)+(3488.03/T -4.952)⋅XAl+(9.419-13263.146/T)⋅XAl^2
此式適用範圍XAl ≤ 0.2084，703K ≤ T ≤ 858K。
經由熱力學計算，EMF量測值在稀薄區中( < 1 wt % Al )可表示為溫度與成分間關係函數EMF = f ( wt % Al, T )，透過此式由量測之電動勢值可預測Zn-Al合金中實際參與反應之有效鋁含量。
希望透過本次研究增加熱浸鍍鋅鍍池的熱力學性質資料庫，以便日後成為熱浸鍍鋅製程的成分控制的學理依據。

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壹、 前言.....................................................................................................1
1-1 研究背景......................................................................................1
1-2 研究動機......................................................................................2
1-2-1 製程面臨的問題................................................................2
1-2-2 實驗目的............................................................................3
貳、 文獻回顧.............................................................................................4
2-1 元素參雜的影響...........................................................................4
2-1-1 鍍層的成長過程................................................................5
2-1-2 Si對鍍層結構的影響：Sandelin效應...............................6
2-1-3 Al對鍍層結構的影響.......................................................8
2-2 熱力學性質.................................................................................10
2-2-1 電化學與熱力學的關係..................................................10
2-2-2 Electromotive Force Method ( EMF量測法)..................12
2-2-3 低Al含量下鍍鋅溶液熱力學行為描述.........................15
參、 實驗方法...........................................................................................17
3-1 實驗目的....................................................................................17
3-2 實驗裝置....................................................................................17
3-3 電極與合金的製備....................................................................18
3-4 EMF之量測................................................................................18
3-5 合金成份定量檢測....................................................................21
肆、 實驗結果與討論...............................................................................22
4-1 富鋅液態合金熱電動勢與溫度關係........................................22
4-1-1 合金XAl = 0.2084.............................................................22
4-1-2 合金XAl = 0.1099.............................................................24
4-1-3 合金XAl = 0.0731.............................................................26
4-1-4 合金XAl = 0.0234.............................................................28
4-1-5 合金XAl = 0.0158.............................................................30
4-1-6 合金XAl = 0.0046.............................................................32
4-1-7 合金XAl = 0.0024.............................................................33
4-1-8 合金XAl = 0.0012.............................................................35
4-1-9 合金XAl = 0.00022...........................................................36
4-1-10 合金XAl = 0.00017...........................................................38
4-1-11 合金XAl = 0.00007...........................................................39
4-2 討論............................................................................................40
4-2-1 濃度XAl &#8804; 0.1099區........................................................45
4-2-2 濃度XAl &#8804; 0.2084區........................................................47
4-2-3 EMF值與濃度和成分關係.............................................49
伍、 結論...................................................................................................51
陸、 參考文獻...........................................................................................53

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