کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1475778 991129 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Porous Si3N4 ceramics prepared via partial nitridation and SHS
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Porous Si3N4 ceramics prepared via partial nitridation and SHS
چکیده انگلیسی

Porous Si3N4 ceramics were prepared via partial nitridation and self-propagating high temperature synthesis (SHS) process. Raw Si and additive Y2O3 were mixed and molded under 10 MPa into a compact, the compact was partial nitridation at 1300 °C to form a porous Si/Si3N4, and then it was buried in a Si/Si3N4 bed for SHS to obtain porous Si3N4 with rod-like β-Si3N4 morphology. The processing combined the advantages of the nitridation of Si and SHS with low cost, low shrinkage and time saving. Porous Si3N4 with a porosity of 47%, a strength of 143 MPa were obtained by this method.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 33, Issue 2, February 2013, Pages 371–374
نویسندگان
, , , , , , ,