کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1581297 | 1514858 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure and boundary phases of Lu-Al-doped silicon nitride by pressureless sintering
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Microstructure and boundary phases of Lu-Al-doped silicon nitride by pressureless sintering Microstructure and boundary phases of Lu-Al-doped silicon nitride by pressureless sintering](/preview/png/1581297.png)
چکیده انگلیسی
Various silicon nitride materials were fabricated by pressureless sintering using lutetia and alumina as sintering additives. Densification behavior, microstructure, strength and formation of secondary crystalline phases were investigated. The combination of Lu2O3/Al2O3 sintering aids can promote the densification and evolution of a fine grain microstructure of Lu-Al-doped silicon nitride because of the low viscosity of the liquid. The Jâ² phase given by Lu4Si2âxAlxO7+xN2âx was considered to be secondary crystalline phase at the grain pockets. The composition with a Lu2O3/Al2O3 weight ratio 10/10 had highest strength of 690 ± 50 MPa.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 500, Issues 1â2, 25 January 2009, Pages 79-83
Journal: Materials Science and Engineering: A - Volume 500, Issues 1â2, 25 January 2009, Pages 79-83
نویسندگان
Bo Wang, Jun Yang, Rui Guo, Jiqiang Gao, Jianfeng Yang,