کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10155461 | 1666349 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructural evolution of SiC powder in molten silicon
ترجمه فارسی عنوان
تکامل میکرو سازنده پودر سی سی در سیلیکون مذاب
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
SiCpowder/Simatrix composites represent a new class of microstructurally toughened materials. The interactions between molten silicon and submicronic SiC powder have been considered since it could originate some limitations on the final properties of the material. Experiments putting in interaction a SiC powder and molten Si were performed while heating up to final values ranging between 1450 and 1600â¯Â°C for duration up to 8â¯h. The volume ratio of SiC and silicon was equal to one and SiC particles were freely dispersed within the liquid. X-ray diffraction analyses demonstrated that the apparent crystallites size increase of SiC powder followed a ripening law corresponding to a limitation either by volume diffusion or by dissolution into the liquid. Depending on the relevant mechanism, the activation energy of the crystallites' growth has been found equal to 357â¯Â±â¯50â¯kJâ¯molâ1 or 441â¯Â±â¯57â¯kJâ¯molâ1. An agglomeration-coarsening process of SiC particles was also identified which promoted a quick formation of larger particles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 16, November 2018, Pages 19836-19845
Journal: Ceramics International - Volume 44, Issue 16, November 2018, Pages 19836-19845
نویسندگان
J. Roger, Y. Le Petitcorps,