کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1463956 989654 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sintering behavior of nano alumina powder shaped by pressure filtration
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Sintering behavior of nano alumina powder shaped by pressure filtration
چکیده انگلیسی

In the present study, the sintering behavior of a commercial nano alumina powder with an initial particle size of 100 nm was investigated. The shrinkage response of the powder formed by pressure filtration (PF) during non-isothermal sintering was measured in a laser assisted dilatometer at three different heating rates of 2, 10 and 25 °C min−1 up to 1400 °C. In order to calculate the activation energy of sintering, constant rate of heating (CRH) was employed and the activation energy was found to be 608 ± 20 kJ mol−1 for iso-density method. The heating rate was demonstrated to have a vital role on densification behavior and final grain size. The mean grain size of the full dense specimens decreased from 875 to 443 nm when the heating rate increased from 2 to 25 °C min−1.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 37, Issue 1, January 2011, Pages 9–14
نویسندگان
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