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; The influence of solution temperature and surface roughness on the appearance of the anodizing aluminum alloy

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Title:	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;The influence of solution temperature and surface roughness on the appearance of the anodizing aluminum alloy
Authors:	周恆毅;Hen-I Chou
Contributors:	機械工程研究所
Keywords:	陽極處理;溫度;粗糙度;CIE Lab;可見光反射率;CIE Lab;visible light reflectance;surface roughness;Temperature;Anodizing
Date:	2003-07-09
Issue Date:	2009-09-21 11:42:30 (UTC+8)
Publisher:	國立中央大學圖書館
Abstract:	本研究之主題為探討在三種不同溫度的陽極處理條件下，包括30℃，21℃以及12℃時，以固定的電流密度15mA/cm2，固定濃度為15wt%的硫酸電解液中，進行為時不等的陽極處理。而根據各個階段量測的膜層性質，利用電子顯微鏡，分光光度計，膜厚測厚儀以及功率分析儀，來探討其微觀的陽極微孔型態，氧化層膜厚的成長趨勢，電流-時間曲線，以及合金表面整體顏色及亮度的改變。除此之外，色彩量測數據為使用工業上的色彩標準CIE Lab表示。藉由實際之噴砂處理，對鋁合金試片施以兩種不同的噴砂壓力，使其表面粗糙度增加。目的為探討在定溫之下，進行相同的陽極處理程序後，試片表面不同的粗糙度對於陽極完成後顏色變化的影響。而同樣是採用CIE Lab色彩座標來表示顏色及亮度的變化值。經由實驗結果得知，降低陽極處理時的溫度，氧化膜層的厚度會增加；從微觀上來看，陽極多孔層中的奈米孔洞尺寸會縮小，但是單一的微胞(cell)尺寸則隨著電壓升高而擴大。根據實驗上所量測之鋁合金表面光反射率數值，顯示出即使在相同膜厚下，當陽極處理時溫度升高，反射率也會隨之些微增加。 The purpose of the study is aimed at investigating anodizing treatment in there different temperature at 30℃,21℃ and 12℃.It is all anodizing at the same current density 15mA/cm2,and using 15wt% sulfuric acid as electrolyte. For every anodizing treatment stage, we discuss the porous cell structure, growing rate of oxide layer, voltage-time curve and finally color change on the alloy’s surface after anodizing. Using SEM, spectrophotometer, coating thickness tester and power analyzer assay all experimental result. Moreover, color data is present by industrial standard CIE Lab coordinate value. By using sand-blasting treatment, surface roughness of the aluminum alloy is changed by different air pressure. The intention is to discuss the color change on the alloy after anodizing exerting different surface roughness condition. The same as before using, color data is present by industrial standard CIE Lab value. When anodizing temperature is decreasing, thickness of the oxide layer is increasing. At small scale, the nano-pore size decreasing, but cell size increasing with forming voltage. Visible light reflectance of the anodizing aluminum alloy surface also rises as anodizing temperature increasing according to the measuring statistics.
Appears in Collections:	[Graduate Institute of Mechanical Engineering] Electronic Thesis & Dissertation

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