کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7888284 | 1509794 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Porous cordierite-based ceramics processed by starch consolidation casting - Microstructure and high-temperature mechanical behavior
ترجمه فارسی عنوان
سرامیک بر اساس کوردیریت متخلخل توسط ریخته گری تثبیت نشاسته پردازش می شود - ریز ساختار و رفتار مکانیکی با درجه حرارت بالا
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کلمات کلیدی
کوردیریت، قطر بینی، میکرو سازه نهایی، ویژگی های مکانیکی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
Porous cordierite-based ceramics with different microstructural features and mechanical behavior were formed by starch consolidation casting (SCC) using native potato and corn starches and sintered at 1275, 1300 and 1330 °C. The composition and microstructure of the ceramic materials were investigated via quantitative phase analysis using X-ray diffraction (with Rietveld refinement), the Archimedes method, mercury porosimetry, scanning electron microscopy and optical microscopy with stereology-based image analysis. The mechanical behavior of samples was evaluated by diametral compression tests at room temperature, 1000 and 1100 °C. The type of starch used and the sintering temperatures were the main factors determining the characteristics of the developed porous microstructures. Materials prepared with corn starch achieved the lowest porosity and the lowest values of mean chord length, mean pore distance and pore throat size. Because of these features, these materials thus presented, in general, higher values of apparent Young's modulus, elastic limit and mechanical strength than those prepared with potato starch. Despite the presence of a silicate glassy phase, both porous materials, mainly those prepared with corn starch, still enhanced the basic mechanical properties at high temperature, in particular, the mechanical strength and the apparent Young's modulus due to the special combination of the porous microstructure features.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 4, March 2018, Pages 3893-3903
Journal: Ceramics International - Volume 44, Issue 4, March 2018, Pages 3893-3903
نویسندگان
M. Laura Sandoval, Mariano H. Talou, AnalÃa G. Tomba Martinez, M. Andrea Camerucci, Eva Gregorová, Willi Pabst,