کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1621773 1516390 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of MoSi2/SiC composite by mechanical-assistant combustion synthesis method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Preparation of MoSi2/SiC composite by mechanical-assistant combustion synthesis method
چکیده انگلیسی

SiC reinforced MoSi2 composite powder with nanostructure has been successfully synthesized by mechanical-assistant combustion synthesis method. This process includes a ball-milling process followed by combustion synthesis. The composition and microstructure of as-milled powder mixture were detected by XRD and SEM analysis. Results showed that Mo and Si nanocrystallites could be obtained during the ball-milling process. Compared with normal powder mixture (Mo +Si + C), it could be easily ignited and higher maximum combustion temperature was achieved. Based on XRD and SEM, it was confirmed that MoSi2/SiC composite powder with nanometric structure could be prepared through combustion method from the mechanical activated powder mixture. At last, the as-synthesized powder was pressureless sintered. The relative density, flexural strength, Vicker's hardness and fracture toughness of the sintered samples are up to 99%, 468.7 MPa, 15.5 GPa and 9.35 MPa m1/2, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 487, Issues 1–2, 13 November 2009, Pages 326–330
نویسندگان
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