Wear behavior of nano-sized metal particle dispersed Al2O 3 nanocomposites

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

Wear behavior of nano-sized metal particle dispersed Al₂O ₃ nanocomposites

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

Dept. of Materials Science & Engineering

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

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 Al ₂O₃/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 Al ₂O₃. In particular, high toughness and hardness were measured for the Al₂O₃/Ni-Co nanocomposite consolidated by PECS. A minimum wear coefficient of 2.33 × 10^-5 mm ³/Nm was obtained for the Al₂O₃/Ni-Co nanocomposite, while the monolithic Al₂O₃ showed a value of 2.0 × 10^-5 mm³/Nm. Wear behavior is discussed in terms of microstructure and mechanical properties of the nanocomposites.

Original language	English
Pages (from-to)	369-372
Number of pages	4
Journal	Key Engineering Materials
Volume	317-318
State	Published - 2006

Keywords

Ceramic/metal composites
Mechanical properties
Nanocomposites
Wear behavior

Cite this

@article{46997bdaba3b44dc965c2f8331f236f2,

title = "Wear behavior of nano-sized metal particle dispersed Al2O 3 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 Al 2O3/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 Al 2O3. In particular, high toughness and hardness were measured for the Al2O3/Ni-Co nanocomposite consolidated by PECS. A minimum wear coefficient of 2.33 × 10-5 mm 3/Nm was obtained for the Al2O3/Ni-Co nanocomposite, while the monolithic Al2O3 showed a value of 2.0 × 10-5 mm3/Nm. Wear behavior is discussed in terms of microstructure and mechanical properties of the nanocomposites.",

keywords = "Ceramic/metal composites, Mechanical properties, Nanocomposites, Wear behavior",

author = "Oh, \{Sung Tag\} and Yoon, \{Se Joong\} and Choa, \{Yong Ho\} and Jeong, \{Young Keun\} and Koichi Niihara",

year = "2006",

language = "English",

volume = "317-318",

pages = "369--372",

journal = "Key Engineering Materials",

issn = "1013-9826",

publisher = "Trans Tech Publications",

}

TY - JOUR

T1 - Wear behavior of nano-sized metal particle dispersed Al2O 3 nanocomposites

AU - Oh, Sung Tag

AU - Yoon, Se Joong

AU - Choa, Yong Ho

AU - Jeong, Young Keun

AU - Niihara, Koichi

PY - 2006

Y1 - 2006

N2 - 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 Al 2O3/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 Al 2O3. In particular, high toughness and hardness were measured for the Al2O3/Ni-Co nanocomposite consolidated by PECS. A minimum wear coefficient of 2.33 × 10-5 mm 3/Nm was obtained for the Al2O3/Ni-Co nanocomposite, while the monolithic Al2O3 showed a value of 2.0 × 10-5 mm3/Nm. Wear behavior is discussed in terms of microstructure and mechanical properties of the nanocomposites.

AB - 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 Al 2O3/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 Al 2O3. In particular, high toughness and hardness were measured for the Al2O3/Ni-Co nanocomposite consolidated by PECS. A minimum wear coefficient of 2.33 × 10-5 mm 3/Nm was obtained for the Al2O3/Ni-Co nanocomposite, while the monolithic Al2O3 showed a value of 2.0 × 10-5 mm3/Nm. Wear behavior is discussed in terms of microstructure and mechanical properties of the nanocomposites.

KW - Ceramic/metal composites

KW - Mechanical properties

KW - Nanocomposites

KW - Wear behavior

UR - https://www.scopus.com/pages/publications/33746079568

M3 - Article

AN - SCOPUS:33746079568

SN - 1013-9826

VL - 317-318

SP - 369

EP - 372

JO - Key Engineering Materials

JF - Key Engineering Materials

ER -

Wear behavior of nano-sized metal particle dispersed Al₂O ₃ nanocomposites

Abstract

Keywords

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