کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10668718 | 1008385 | 2010 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization of Al2O3-TiO2 nano porous solar absorbers derived via MAO/sol-gel hybrid process
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Characterization of Al2O3-TiO2 nano porous solar absorbers derived via MAO/sol-gel hybrid process Characterization of Al2O3-TiO2 nano porous solar absorbers derived via MAO/sol-gel hybrid process](/preview/png/10668718.png)
چکیده انگلیسی
Micro arc oxidation combined with sol-gel process was used to develop solar selective absorber systems for the first time. Phase structure and chemical composition of the layers were studied by XRD and XPS techniques. The layers consisted of anatase, rutile, α-alumina, γ-alumina, and Al2TiO5 phases with varying fractions with the growth conditions. SEM and AFM investigations revealed a porous structure (pore size: 60-550 nm) with a rough surface where pore size and surface roughness increased with the applied voltage. Solar absorption and emission coefficients were measured using UV-Vis-NIR and IR spectrophotometry. In spite of being so thin, the fabricated samples revealed a high solar absorptivity of α = 0.99 and low thermal emissivity of ε = 0.06. A formation mechanism was proposed based on the electrochemical foundations as well.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 205, Issue 7, 25 December 2010, Pages 2483-2489
Journal: Surface and Coatings Technology - Volume 205, Issue 7, 25 December 2010, Pages 2483-2489
نویسندگان
M.R. Bayati, H.R. Zargar, Ali Talimian, Ahmad Ziaee, Roya Molaei,