کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10626650 | 989695 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis, evaluation and characterization of alumina ceramics with elongated grains
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis, evaluation and characterization of alumina ceramics with elongated grains Synthesis, evaluation and characterization of alumina ceramics with elongated grains](/preview/png/10626650.png)
چکیده انگلیسی
Alumina ceramics with high fracture toughness were synthesised by introducing seeds and controlling processing using the in situ self-toughening technique. The preparation of the high tough alumina materials started with cheap commercial aluminum hydroxide as raw materials. α-Alumina powder was gained by low temperature calcination of the aluminum hydroxide with seeds, which were introduced by high purity alumina ball medium during grinding. The alumina powders were hot-pressed, then, the high tough alumina ceramics with elongated grains were obtained. The elongated grain structure is originally considered to play a significant role in the increment of fracture toughness. Meanwhile, in order to investigate in situ toughening mechanism of elongated alumina grains, which can produce crack bridging, crack deflection and pull-out as dominant toughening mechanisms to greatly increase toughness, fractal characteristics and model were studied in detail.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 31, Issue 7, 2005, Pages 953-958
Journal: Ceramics International - Volume 31, Issue 7, 2005, Pages 953-958
نویسندگان
Lihua Xu, Zhipeng Xie, Lichun Gao, Xidong Wang, Fang Lian, Tong Liu, Wenchao Li,