کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7899145 1510142 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Constrained sintering of alumina stripe patterns on rigid substrates: Effect of stripe geometry
ترجمه فارسی عنوان
طوفان محدود ساختارهای خطی آلومینا بر روی بسترهای سخت: اثر هندسه نوار
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
The sintering behaviour of alumina stripes deposited on sapphire substrates by micromolding in capillaries - a soft lithographic method - with lateral dimensions from 10 to 500 μm and thicknesses between 7 μm and 32 μm was studied. Unlike in continuous films, the lateral sintering strain is not negligible, thus reducing the constraint imposed by the substrate. Lateral shrinkage depends on the stripe width and thickness. The degree of constraint exerted on alumina stripes by a rigid sapphire substrate was investigated by comparing the lateral and vertical strains and is found to be dependent on stripe geometry. The formation of a delaminated, highly dense edge zone was observed at the free boundaries. Its influence on overall densification and local density distribution depends on its extension compared to the total film width. A gradient in local density was found that varied both with stripe thickness and width as predicted by finite element and discrete element simulations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 33, Issues 15–16, December 2013, Pages 3221-3230
نویسندگان
, , , ,