کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1474407 991088 2014 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A new and economic approach to fabricate resistant porous membrane supports using kaolin and CaCO3
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
A new and economic approach to fabricate resistant porous membrane supports using kaolin and CaCO3
چکیده انگلیسی

This new and economic approach to fabricate resistant porous membrane supports consists of Algerian kaolin and calcite (CaCO3) instead of Al2O3. The porous mullite (3Al2O3·2SiO2) and anorthite (CaO·Al2O3·2SiO2) based ceramics were obtained by solid state reaction. Different calcite amounts (10–28 wt%) have been added into kaolin halloysite type (Al2O3·2SiO2·4H2O) in order to control pores forming with appropriate distribution and sizes. Based on a pore distribution and formed phases, a kaolin + 15 wt% calcite (K15C) mixture was selected for flat and tubular configurations. A porosity of 45–52% was also obtained when K15C compacts were sintered at 1100–1250 °C. For example, porosity, average pore size (APS) and 3 point flexural strength were 49%, 3 μm and 87 MPa (same as Al2O3 value), respectively when K15C compacts were sintered at 1250 °C for 1 h. Finally, a correlation between microstructure and mechanical properties of elaborated supports has been discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 34, Issue 5, May 2014, Pages 1329–1340
نویسندگان
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