کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
822100 906781 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hybrid nanocomposites: A new route towards tougher alumina ceramics
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Hybrid nanocomposites: A new route towards tougher alumina ceramics
چکیده انگلیسی

This paper describes a new class of alumina composites based on a novel hybrid microstructure design, in which multiwalled carbon nanotubes (MWNTs) and SiC nanoparticles are combined to give a new type system of ceramic nanocomposites. This design provides mutually redundant mechanisms to enhance the strength and toughness of the alumina matrix without deteriorating its intrinsic properties such as hardness. The hybrid alumina composites with different MWNT contents (0, 5, 7, and 10 vol%) and 1 vol% of SiC were fabricated by spark plasma sintering. The resulting significant improvement in mechanical properties, specially the fracture toughness, is substantiated by direct evidence for toughening mechanisms by MWNTs, observed for the first time in highly disordered MWNT/alumina composites.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 68, Issue 6, May 2008, Pages 1321–1327
نویسندگان
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