Wear behavior of nano-sized metal particle dispersed Al2O3 nanocomposites
- Authors
- Oh, Sung-Tag; Yoon, Se-Joong; Choa, Yong Ho; Jeong, Young-Keun; Niihara, Koichi
- Issue Date
- Aug-2006
- Publisher
- Trans Tech Publications Ltd.
- Keywords
- nanocomposites; ceramic/metal composites; wear behavior; mechanical properties
- Citation
- Key Engineering Materials, v.317-318, pp 369 - 372
- Pages
- 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- Key Engineering Materials
- Volume
- 317-318
- Start Page
- 369
- End Page
- 372
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/45412
- DOI
- 10.4028/www.scientific.net/KEM.317-318.369
- ISSN
- 1013-9826
1662-9795
- Abstract
- The microstructure and mechanical properties including wear resistance of Al2O3-based nanocomposites with 5 vol% of Cu and Ni-Co dispersions were investigated. Al2O3/Cu and Al2O3/ Ni-Co nanocomposites were fabricated by hydrogen reduction and sintering process using metal oxide and metal nitrates. The composites showed homogeneous microstructures with nano-sized metal dispersions and enhanced fracture strength and toughness compared with monolithic Al2O3. In particular, high toughness and hardness were measured for the Al2O3/Ni-Co nanocomposite consolidated by PECS. A minimum wear coefficient of 2.33 x 10(-5) mm(3)/Nm was obtained for the Al2O3/Ni-Co nanocomposite, while the monolithic Al2O3 showed a value of 2.0 x 10(-5) mm(3)/Nm. Wear behavior is discussed in terms of microstructure and mechanical properties of the nanocomposites.
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