کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1458666 989580 2016 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of zircon particle size on conventional and microwave assisted reaction sintering of in-situ mullite–zirconia composites
ترجمه فارسی عنوان
تاثیر اندازه ذره زیرکون بر روی واکنش های متداول و مایکروویو واکنش پذیری کامپوزیت های مولکول های مضاعف زیرکونیا
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی

Mullite–zirconia composites were fabricated by reaction sintering of ZrSiO4 and α-Al2O3 using conventional heating and microwave processing. The powder mixtures were prepared from sub-micron zircon powders with three different particle sizes and CIPed as coin shaped samples. The samples sintered both in a muffle furnace and microwave furnace. The open porosities, bulk and true densities were measured. Phase transformations were characterized by X-ray diffraction and microstructures were evaluated by scanning electron microscopy. The effects of zircon particle size on the in-situ transformation system and mullitization was evaluated for both methods. As a result, decreasing zircon particle size decreases the in-situ transformation temperature for 25 °C (1575 °C) in conventional heating. Microwave assisted sintering (MAS) lowers the transformation temperature at least 50 °C by lowering the activation energy more efficiently and gives better densification than conventional sintering. Furthermore, milling also produces structures having finer mullite grains.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 9, July 2016, Pages 11104–11117
نویسندگان
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