کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1475130 991109 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of alumina foams by the thermo-foaming of powder dispersions in molten sucrose
ترجمه فارسی عنوان
تهیه فوم های آلومینا به وسیله ترموفوم پراکندگی پودر در سوکروز گلدان
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی

The alumina powder disperses in molten sucrose due to the hydrophilic interaction between the particle surface and sucrose hydroxyls. The thermo-foaming of the dispersions is due to the bubbles created by the water vapour produced by the OH condensation at 150 °C which are stabilized by the alumina particles adsorbed on the gas–liquid interface as well as the increase in viscosity. The foaming time, the foam setting time and the foam volume depend on the alumina powder to sucrose weight ratio. The alumina foams have interconnected cellular microstructure and the cells are having a near spherical morphology. The porosity (97.84–93.29 vol.%.) decreased and the average cell size (0.54–1.2 mm) increased with the increase in alumina powder to sucrose weight ratio (0.4–1.4). The alumina foams with density in the range of 0.239–0.267 g/cc showed compressive strength in the range of 1.02–1.47 MPa.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 34, Issue 2, February 2014, Pages 425–433
نویسندگان
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