کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1462925 | 989640 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Boron suboxide materials with Co sintering additives
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
Difficulties in the densification as well as the low fracture toughness of the resulting polycrystalline materials have delayed the application of boron suboxide as a superhard material in industry. In this work, efforts have been made to improve the fracture toughness and densification of these materials by incorporating suitable secondary phases. Possible candidates are transition metals, which form under sintering conditions a liquid phase. Therefore different Co containing additives (metal, oxide and boride) were used to densify boron suboxide powder by hot pressing. The resulting materials have a significantly improved fracture toughness (3.9 MPa m1/2) and still high hardness (HV5 = 28.6 GPa.).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 36, Issue 6, August 2010, Pages 1767–1771
Journal: Ceramics International - Volume 36, Issue 6, August 2010, Pages 1767–1771
نویسندگان
O.T. Johnson, I. Sigalas, E.N. Ogunmuyiwa, H.J. Kleebe, M.M. Müller, M. Herrmann,