کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7889058 1509796 2018 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Apparent viscosity reduction during microwave sintering of amorphous silica
ترجمه فارسی عنوان
کاهش ویسکوزیته ظاهری در زمان پخت مایکروویو سیلیس آمورف
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
The sintering of arrays of spherical particles of amorphous SiO2 was investigated experimentally under microwave (24 GHz) and conventional heating. The materials under study were compacts formed by gravitational sedimentation of monodisperse silica microspheres (1 µm in diameter). The kinetics of neck growth between individual particles was investigated by analyzing SEM images. It was found that the rates of viscous mass transport under microwave heating were significantly higher than those under conventional heating. The values of the viscosity obtained under microwave heating were significantly (by more than an order of magnitude) lower compared to conventional heating. Possible reasons for the viscosity decrease observed under microwave heating may be associated with the influence of water vapor and the action of the electromagnetic field on impurity ions. The interrelation of the observed effect with flash sintering and microwave-enhanced mass transport is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 2, 1 February 2018, Pages 1797-1801
نویسندگان
, , , , ,