Cold consolidation of metal-ceramic nanocomposite powders with large ceramic fractions

Enric Menéndez, German Salazar-Alvarez, Alexander P. Zhilyaev, Santiago Suriñach, Maria Dolors Baró, Josep Nogués, Jordi Sort

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22 Citations (Scopus)

Abstract

Co/α-Al2O3 powder mixtures (5, 10, 20, 30, 40, and 50 mass % of α-Al2O3) have been ball-milled and, subsequently, consolidated at room temperature by means of a high pressure torsion procedure in order to produce bulk nanostructured composites. For mixtures up to 20% of a-Al2O3, the cold-compaction results in roughly fully dense disks with relatively high microhardness values. However, the compaction for 30,40, and 50% of α-Al2O 3 is less effective, resulting in a reduction of the microhardness although a structure in the nanoscale range is still preserved. A detailed structural investigation has been also performed. © 2008 WILEY-VCH Verlag GmbH & Co. KGaA.
Original languageEnglish
Pages (from-to)3293-3298
JournalAdvanced Functional Materials
Volume18
DOIs
Publication statusPublished - 23 Oct 2008

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