کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9795835 | 1514935 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of Ti3SiC2 powders by mechanically activated sintering of elemental powders of Ti, Si and C
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Mechanically activated sintering process has been employed to fabricate titanium silicon carbide (Ti3SiC2) powders by using the elemental powders of Ti, Si and C. Superfine powders were obtained after milling of both the powder mixtures with a stoichiometric composition and with an excess of 20 mol.% Si for only 1.5 h. The milled powders comprised TiC, Ti3SiC2 and silicides because a mechanically induced self-propagating reaction (MSR) was triggered during mechanical alloying. The aim of the extra-Si introduced to the starting composition is to study its effect on the formation of Ti3SiC2. High content of Ti3SiC2 has been obtained after sintering the milled powders at relatively low temperature of 1250 °C. Ti3SiC2 grains exhibit a fast growth behavior and various features in shape. A large amount of Ti3SiC2 whiskers have been found after sintering the milled powders with excess of Si at 1350 °C. The formation of Ti3SiC2 whiskers has relation to the appearance of eutectic liquid phases at that temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 407, Issues 1â2, 25 October 2005, Pages 315-321
Journal: Materials Science and Engineering: A - Volume 407, Issues 1â2, 25 October 2005, Pages 315-321
نویسندگان
Shi-Bo Li, Hong-Xiang Zhai, Yang Zhou, Zhi-Li Zhang,