ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
An optimum route to fabricate the Al2O3/Cu nanocomposites with sound microstructureand improved mechanical properties was investigated. Three powder mixtures of Al2O3 and Cu,CuO or Cu-nitrate were used to obtain Al2O3/5 vol% Cu composites. Microstructural investigationsfor the composite from Al2O3/Cu-nitrate showed that fine Cu particles, about 150 nm in diameter,were homogeneously distributed within the Al2O3 matrix grains and at the grain boundaries.Fracture toughness of 4.8 MPa[removed info]m and strength of 953 MPa were measured for the Al2O3/5 vol% Cunanocomposites prepared from Al2O3/Cu-nitrate mixture. The toughening and strengthening of thecomposites are explained by the crack bridging/deflection and the refinement of the microstructure,respectively
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/08/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.449-452.1213.pdf
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