کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1582037 | 1514867 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of nano-Al2O3 and Y2O3 on the properties and microstructure of Si3N4
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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: Effect of nano-Al2O3 and Y2O3 on the properties and microstructure of Si3N4 Effect of nano-Al2O3 and Y2O3 on the properties and microstructure of Si3N4](/preview/png/1582037.png)
چکیده انگلیسی
Nano-Al2O3 and Y2O3 had a significant effect on the microstructural evolution and mechanical properties of Si3N4. With the addition of nano-Al2O3, large elongated grains were developed and the grain boundary phase decreased. Besides, the proportion of intergranular fracture increased for nano-Al2O3-doped Si3N4. The highest fracture toughness of nano-Al2O3-doped Si3N4 was 9.5 MPa m1/2 (7.2 MPa m1/2 for submicro- Al2O3-doped Si3N4). The increase in mechanical properties might be ascribed to the formation of large elongated grains, the reduction of secondary phases and the “pullout” of elongated grains.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 491, Issues 1â2, 15 September 2008, Pages 177-181
Journal: Materials Science and Engineering: A - Volume 491, Issues 1â2, 15 September 2008, Pages 177-181
نویسندگان
Haitao Gu, Han Chen, Lucun Guo,