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研究生:胡曜翔
研究生(外文):Yao-Hsiang Hu
論文名稱:電解拋光對鋁材二次陽極處理後再電解著色之研究
論文名稱(外文):THE EFFECT OF ELECTROPOLISHING ON THE ANODIC FILM AND ITS ELECTROLYTIC COLORING FROM A SECONDARY ANODIC PROCESS
指導教授:施幸祥
指導教授(外文):Hsing-Hsiang Shih
口試委員:施幸祥
口試委員(外文):Hsing-Hsiang Shih
口試日期:2014-07-22
學位類別:碩士
校院名稱:大同大學
系所名稱:化學工程研究所
學門:工程學門
學類:化學工程學類
論文種類:學術論文
論文出版年:2014
畢業學年度:102
語文別:中文
論文頁數:93
中文關鍵詞:電解著色二次陽極處理電解拋光
外文關鍵詞:secondary anodicelectrolytic coloringelectropolishing
相關次數:
  • 被引用被引用:1
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本研究是在陽極處理前,先在鋁片上進行電解拋光,之後硫酸中進行二次陽極處理,期望獲得更好孔洞結構的陽極鋁膜,以利於電解著色,電解著色於硫酸銅,並尋求最好的著色條件。
實驗發現,鋁材經過電解拋光處理後,可以得到較大的規則性孔洞;若是進行二次陽極處理,同樣也會提升陽極孔洞的數量及大小;將鋁片同時進行電解拋光以及二次陽極處理後在電解著色,陽極膜的膜厚會增加。從SEM以及AFM得知,陽極孔洞相較於一次陽極、二次陽極處理及拋光後一次陽極處理是有變大,變多的,也有利於電解著色。著色後,色差的L*及ΔΕ有最低值,反射率也是最低,但硬度方便反而也降低。
在磷酸及硝酸中電解拋光直流電壓10V,處理時間30分鐘,二次陽極處理電流密度2A/dm2,處理時間30分鐘,電解著色交流電壓20V,著色時間120分鐘為最好的操作條件。可以得到最低的ΔΕ值為10.36,最低反射率5.4%。
The study was carried out by means of the method of electropolishing on the anodic films before secondary anodic treatment and then electrolytic coloring in cupric sulfate solution. It is expected that by this method a dense and regular oxidizing film on aluminum can be obtained and that the optimum operating conditions for obtaining a blackest film are found out.
The experimental results show that electropolishing on the anodic films increase the size of pores and more regular, the secondary anodic treatment can also increase the size and the number of pores, after electropolishing and secondary anodic treatment on aluminum sheets make the thickness of the anodic colored film become thicker. From SEM and AFM we found the pores are larger and more than anodic treatment, secondary anodic treatment, and anodic treatment after electropolishing, also has a good effect for electrolytic coloring. We get the lowest ΔΕ*and reflectivity after coloring, but the hardness of the anodic colored film become lower.
The optimal operating conditions for obtaining the blackest colored
film are: electropolishing voltage 10Vdc, electropolishing time 30 min in phosphoric acid and ethanol, secondary anodic treatment current 2A/dm2, secondary anodic treatment time 30 min, electrolytic coloring voltage 20 Vac and electrolytic coloring time 120 minutes, the lower △E value, and reflectivity would be obtained. Those values are respectively 9.96 and 5.4%.
目錄
致謝 1
ABSTRACT ii
摘要 iv
圖目錄 vii
表目錄 xi
第一章 1
前言 1
第二章 5
理論基礎 5
2.1鋁材的前處理 5
2.1.1鹼洗 5
2.1.2酸洗 5
2.1.3去離子水的清洗 5
2.2電解拋光 6
2.3鋁的陽極氧化 8
2.4脈衝電流法 18
2.5電解著色 21
第三章 25
實驗 25
3.1材料與試片的準備 25
3.2實驗裝置及儀器 28
3.3實驗過程 31
3.4量測 33
3.4.7腐蝕試驗 37
第四章 40
結果與討論 40
4.1氧化膜之SEM圖 40
4.2膜厚 43
4.3色差值 46
4.4反射率 57
4.5氧化膜之AFM圖 67
4.6光澤度 73
4.7硬度 79
4.8腐蝕測驗 85
第五章 87
結論 87
參考文獻 90
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