کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5437885 1398178 2017 20 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Impact of microwave processing on porcelain microstructure
ترجمه فارسی عنوان
تاثیر پردازش مایکروویو بر ریز ساختار چینی
کلمات کلیدی
ظروف چینی، آلومینوسیلیکات، مولیت، پخت مایکروویو، فیلد به تکنیک پختن کمک کرد،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
Microstructural evolution on sintering of porcelain powder compacts using microwave radiation was compared with that in conventionally sintered samples. Using microwaves sintering temperature was reduced by ~ 75 °C and dwell time from 15 min to 5 min while retaining comparable physical properties i.e. apparent bulk density, water absorption to conventionally sintered porcelain. Porcelain powder absorbed microwave energy above 600 °C due to a rapid increase in its loss tangent. Mullite and glass were used as indicators of the microwave effect: mullite produced using microwaves had a nanofibre morphology with high aspect ratio (~ 32 ± 3:1) believed associated with a vapour-liquid-solid (VLS) formation mechanism not previously reported. Microwaves also produced mullite with different chemistry having ~ 63 mol% alumina content compared to ~ 60 mol% alumina in conventional sintered porcelain. This was likely due to accelerated Al+3 diffusion in mullite under microwave radiation. Liquid glass was observed to form at relatively low temperature (~ 900-1000 °C) using microwaves when compared to conventional sintering which promoted the porcelains ability to absorb them.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 16, November 2017, Pages 13765-13771
نویسندگان
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