Paper Title:
Production and Characterization of Alumina-Diamond Composites and Nanocomposites
  Abstract

One of the most recent alternatives in the development of materials with high mechanical properties and wear resistance is the addition of nanometric and/or micrometric particles of a secondary phase into ceramic matrices. Nanostructured materials can be defined as systems that have at least one microstructural characteristic of nanometric dimensions (less than 100nm). In this work, alumina-diamond nanocomposites were produced using nanometric diamond powder obtained by high energy milling in a SPEX mixer mill for 6h. The crystallite size was 30nm. After deagglomeration, the diamond powder was added to the alumina matrix in a ratio of 5wt%. The samples were isostatically pressed and high-vacuum sintered. The resulting nanocomposites and composites were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), and by microhardness, diametral compression and wear resistance tests. The results confirmed the promising wear characteristics of the alumina-diamond nanocomposite.

  Info
Periodical
Edited by
Pietro VINCENZINI, Sheldon WIEDERHORN and Paolo COLOMBO
Pages
16-20
DOI
10.4028/www.scientific.net/AST.65.16
Citation
E. M.J. Agnolon Pallone, V. Trombini, K. L. Silva, L. O. Bernardi, M. Yokoyama, R. Tomasi, "Production and Characterization of Alumina-Diamond Composites and Nanocomposites", Advances in Science and Technology, Vol. 65, pp. 16-20, 2010
Online since
October 2010
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$32.00
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