کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1464397 989661 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The phase transformation and microstructure of TiAl/Ti2AlC composites caused by hot pressing
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
The phase transformation and microstructure of TiAl/Ti2AlC composites caused by hot pressing
چکیده انگلیسی

Two series of raw materials were adopted to form TiAl/Ti2AlC composites: Ti/Al/TiC and Ti/Al/C. Differential thermal analysis (DTA) of starting powers and X-ray diffraction (XRD) of samples sintered at different temperatures from 600 °C to 1300 °C by hot pressing were utilized to analyze the phase transformation and the mechanism of synthesis. Scanning electron microscopy (SEM) coupled with energy-dispersive spectroscopy (EDS) was utilized to investigate the morphology characteristics of the products. The experimental results showed that Ti reacted with Al to form TiAl intermetallics below 900 °C; and above 900 °C, TiAl reacted with TiC to produce dense TiAl/Ti2AlC composites. The products sintered at 1200 °C had fine crystals and dense fibres, and the distribution of Ti2AlC particles in TiAl matrix was homogeneous.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 35, Issue 5, July 2009, Pages 1807–1812
نویسندگان
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