کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1491603 | 992355 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Floating combustion synthesis of spherical vitreous silica nano-powder
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Floating combustion synthesis of spherical vitreous silica nano-powder Floating combustion synthesis of spherical vitreous silica nano-powder](/preview/png/1491603.png)
چکیده انگلیسی
Vitreous silica nano-powder, with spherical particles of 50–300 nm in size, was successfully produced via floating combustion synthesis. Mechano-chemically activated and spray-dried Si-powder was oxidized in fluidized bed between 900 °C and 1550 °C in air. After 10 min, rapid removal of powder from the furnace and quenching maintained silica's vitreous nature. The process comprises sequential cycles of the following stages until nano-sized particles of silica are obtained. Superficial melting of Si-particles initially occurs and the particles obtain a spherical shape. The surface of the particles is oxidized. The stress at silica/silicon interface causes collapse of particles to smaller ones.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 44, Issue 1, 8 January 2009, Pages 130–133
Journal: Materials Research Bulletin - Volume 44, Issue 1, 8 January 2009, Pages 130–133
نویسندگان
Yuan Zhu, Hai Bo Jin, Ke Gang Ren, Simeon Agathopoulos, Ke Xin Chen,