کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1604349 1516001 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phase identification of Al–B4C ceramic composites synthesized by reaction hot-press sintering
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Phase identification of Al–B4C ceramic composites synthesized by reaction hot-press sintering
چکیده انگلیسی

A series of boron carbide (B4C) matrix composites with different contents of Al, were synthesized by reaction hot-press sintering with milled B4C and pure metallic Al powder at 1600 °C for 1 h. X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscopy (TEM) were used to identify the phase constituent of the milled powders and the composites. The results have shown that parts of B4C and Al particles were oxidized to boron oxide (B2O3) and alumina (Al2O3) during the milling. Thermit reaction occurred and B2O3 was reverted during hot-press sintering. A ternary phase of Al boron carbide (Al8B4C7) was found in the composites, and the B4C transformed to a rich boron phase (B6.5C) because of the superfluous boron in the system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refractory Metals and Hard Materials - Volume 28, Issue 2, March 2010, Pages 297–300
نویسندگان
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