کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
832448 1470368 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
In situ growth of elongated Al2O3 grains induced by Al nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
In situ growth of elongated Al2O3 grains induced by Al nanoparticles
چکیده انگلیسی

We have reported the in situ growth of elongated grains induced by Al nanoparticles for the fabrication of high-pure and high toughness Al2O3 ceramics. It is found that the introduced Al nanoparticles have a profound effect on the anisotropic growth of Al2O3 grains. As compared to the conventional techniques by adding impurities to induce the anisotropic grain growth, Al particles could be transformed into Al2O3 after sintering in air, leading to the formation of high-pure Al2O3 ceramics without contamination. The elongated grains induced by the Al nanoparticles make noticeable improvements of bending strength and fracture toughness of Al2O3 ceramics. Current work might benefit the fabrication of high-pure and high toughness Al2O3 ceramics with in situ grown elongated grains.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 30, Issue 10, December 2009, Pages 4507–4510
نویسندگان
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