反射率及耗損率對於太陽反射板之聚光效果有極大相關性，進一步影響太陽能板之光電轉換效率。本研究以電化學拋光及陽極處理法製備具高反射率及高吸附性之陽極氧化鋁(Anodic Aluminum Oxide, AAO)基板，並於陽極氧化鋁表面製備二氧化鈦複合三氧化二鋁鍍層，佐以田口實驗法(Taguchi Method)針對二氧化鈦鍛燒溫度、二氧化鈦與三氧化二鋁複合比例及電泳沉積時間進行最佳化參數研究。冀提供反射基板之抗腐蝕性及自潔性能優化，同時不犧牲基板之反射效果。
實驗包含：(1) X光繞射儀進行晶格結構分析；(2) 動電位極化法評估基板之抗腐蝕性；(3) 掃描式電子顯微鏡觀察基板表面織構，佐以能量散射X射線光譜儀進行元素成分鑑定；(4) 接觸角量測儀測定基板表面親/疏水性；(5) 多通道光催化系統檢驗基板之自潔性能；(6) 紫外/可見光分光光譜儀進行基板反射率量測；(7) 鹽霧試驗儀加速模擬基板於天然環境下之耐候性。
結果顯示，具混相之二氧化鈦與三氧化二鋁以莫耳比1：1進行複合，並電泳沉積20秒於陽極氧化鋁表面之基板擁有最低腐蝕速率0.012 mpy；相較於未處理鋁基板之腐蝕速率0.709 mpy，腐蝕速率獲得有效抑制。基板之反射率及光催化降解率分別為87.0 %及81.7 %；亦即，經二氧化鈦及三氧化二鋁複合鍍層進行表面修飾之陽極氧化鋁基板兼具高反射率及自潔性能，極具未來應用於太陽能反射板之發展價值。

Solar conversion efficiency depends on the concentrated effect of solar reflectors, and the concentrated effect has a lot to do with its reflectance and depletion rate. In this study, an anodic aluminum oxide (AAO) substrate with high reflectivity was prepared by electro-chemical polishing method and anodizing method. Besides these surface treatments, a composite coating comprises titanium dioxide (TiO2) and aluminum oxide (Al2O3) was deposited on the surface of AAO substrates. This research would be performed by Taguchi method which centered about the parameters of calcining temperature of TiO2, the compound proportion between TiO2 and Al2O3 and deposition time. These treatments not only improved the efficiency of corrosion resistance and self-cleaning property but also maintained the reflectance of the substrates.
The following are experiments of this research: (1) XRD for lattice structure analysis；(2) Dynamic polarization curves for corrosion resistance measurement；(3) SEM for surface morphology observation, and Energy-dispersive X-ray spectroscopy for appraising elemental composition；(4) Contact angle measuring instrument for evaluating the surface hydrophilicity；(5) Photocatalytic system for testing self-cleaning property of substrates；(6) UV-Vis to measure reflectivity；(7) Salt spray test simulates the natural environment to test the weathering resistance of the substrates.
The results showed that the AAO substrate which was deposited by molar proportion of heterogeneous phase TiO2 to Al2O3 which was 1：1 by 20 seconds got the best corrosion resistance, and its corrosion rate was 0.012 mpy. Compare with the corrosion rate of untreated substrate was 0.709 mpy, the corrosion rate was inhibited successfully. Additionally, the reflectivity and the degradation rate of Rh B dye of the AAO substrate was 87.0 % and 81.7 %. In summary, not only did the AAO substrate have high reflectivity and self-cleaning property, but it also had excellent corrosion resistance. Therefore, AAO substrates with TiO2/Al2O3 coating have a great developmental potential in the application of solar reflector systems.

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