کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10668818 | 1008471 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dense silica-based coatings prepared from colloidal silica
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Two sets of silica-based coatings have been prepared using two different wet methods. Set A was obtained using the conventional sol-gel method from thetraethyl-orthosilicate (TEOS) as the main precursor. Set B was produced from commercial colloidal silica added with two structural modifiers, KOH and sodium metasilicate (Na2SiO35H2O). The structure of both sets of coatings was characterized using infrared absorption, X-ray diffraction and nitrogen adsorption isotherms measurements. The results show a much lower surface area and a slower oxygen diffusion rate for coatings of set B, indicating that these coatings have a denser structure and therefore are more effective as oxygen barriers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 190, Issue 1, 3 January 2005, Pages 110-114
Journal: Surface and Coatings Technology - Volume 190, Issue 1, 3 January 2005, Pages 110-114
نویسندگان
J.A. Calderón-Guillén, L.M. Avilés-Arellano, J.F. Pérez-Robles, J. González-Hernández, E. Ramos-RamıÌrez,