Wear Behavior of Nano-Sized Metal Particle Dispersed Al2O3 Nanocomposites

Sung Tag Oh; Se Joong Yoon; Yong Ho Choa; Young Keun Jeong; Koichi Niihara

doi:10.4028/www.scientific.net/KEM.317-318.369

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 317-318Wear Behavior of Nano-Sized Metal Particle...

Wear Behavior of Nano-Sized Metal Particle Dispersed Al₂O₃ Nanocomposites

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 mm3/Nm was obtained for the Al2O3/Ni-Co nanocomposite, while the monolithic Al2O3 showed a value of 2.0 x 10-5 mm3/Nm. Wear behavior is discussed in terms of microstructure and mechanical properties of the nanocomposites.

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Periodical:

Key Engineering Materials (Volumes 317-318)

Pages:

369-372

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.317-318.369

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Online since:

August 2006

Authors:

Sung Tag Oh, Se Joong Yoon, Yong Ho Choa, Young Keun Jeong, Koichi Niihara

Keywords:

Ceramic/Metal Composites, Mechanical Property, Nanocomposite, Wear Behaviour

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