Processing and fracture toughness of nano-sized Cu-dispersed Al2O3 composites

Kyung Ho Min; Sung Tag Oh; Young Do Kim; In Hyung Moon

doi:10.1016/S0925-8388(02)01120-9

Processing and fracture toughness of nano-sized Cu-dispersed Al₂O₃ composites

Kyung Ho Min
, Sung Tag Oh
, Young Do Kim
, In Hyung Moon

Dept. of Materials Science & Engineering

Hanyang University

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

17 Scopus citations

Abstract

An optimum route for the fabrication of Al₂O₃/Cu nanocomposites with sound microstructure and enhanced fracture toughness was investigated. Cu-dispersed Al₂O₃ nanocomposites were obtained via hydrogen reduction and the pulse electric current sintering (PECS) of ball-milled Al₂O₃ and CuO powder mixtures. Microstructural observation of the reduced powder revealed that Cu particles of about 30 nm size homogeneously surrounded the Al₂O₃ powder. The nanocomposites, consolidated by PECS at 1250 °C for 5 min, exhibited full density and enhanced fracture toughness compared with monolithic Al₂O₃.

Original language	English
Pages (from-to)	163-167
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	352
Issue number	1-2
DOIs	https://doi.org/10.1016/S0925-8388(02)01120-9
State	Published - 24 Mar 2003

Keywords

Fracture toughness
Hydrogen reduction
Nanocomposites
Pulse electric current sintering

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10.1016/S0925-8388(02)01120-9

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title = "Processing and fracture toughness of nano-sized Cu-dispersed Al2O3 composites",

abstract = "An optimum route for the fabrication of Al2O3/Cu nanocomposites with sound microstructure and enhanced fracture toughness was investigated. Cu-dispersed Al2O3 nanocomposites were obtained via hydrogen reduction and the pulse electric current sintering (PECS) of ball-milled Al2O3 and CuO powder mixtures. Microstructural observation of the reduced powder revealed that Cu particles of about 30 nm size homogeneously surrounded the Al2O3 powder. The nanocomposites, consolidated by PECS at 1250 °C for 5 min, exhibited full density and enhanced fracture toughness compared with monolithic Al2O3.",

keywords = "Fracture toughness, Hydrogen reduction, Nanocomposites, Pulse electric current sintering",

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T1 - Processing and fracture toughness of nano-sized Cu-dispersed Al2O3 composites

AU - Min, Kyung Ho

AU - Oh, Sung Tag

AU - Kim, Young Do

AU - Moon, In Hyung

PY - 2003/3/24

Y1 - 2003/3/24

N2 - An optimum route for the fabrication of Al2O3/Cu nanocomposites with sound microstructure and enhanced fracture toughness was investigated. Cu-dispersed Al2O3 nanocomposites were obtained via hydrogen reduction and the pulse electric current sintering (PECS) of ball-milled Al2O3 and CuO powder mixtures. Microstructural observation of the reduced powder revealed that Cu particles of about 30 nm size homogeneously surrounded the Al2O3 powder. The nanocomposites, consolidated by PECS at 1250 °C for 5 min, exhibited full density and enhanced fracture toughness compared with monolithic Al2O3.

AB - An optimum route for the fabrication of Al2O3/Cu nanocomposites with sound microstructure and enhanced fracture toughness was investigated. Cu-dispersed Al2O3 nanocomposites were obtained via hydrogen reduction and the pulse electric current sintering (PECS) of ball-milled Al2O3 and CuO powder mixtures. Microstructural observation of the reduced powder revealed that Cu particles of about 30 nm size homogeneously surrounded the Al2O3 powder. The nanocomposites, consolidated by PECS at 1250 °C for 5 min, exhibited full density and enhanced fracture toughness compared with monolithic Al2O3.

KW - Fracture toughness

KW - Hydrogen reduction

KW - Nanocomposites

KW - Pulse electric current sintering

UR - https://www.scopus.com/pages/publications/0037464014

U2 - 10.1016/S0925-8388(02)01120-9

DO - 10.1016/S0925-8388(02)01120-9

M3 - Article

AN - SCOPUS:0037464014

SN - 0925-8388

VL - 352

SP - 163

EP - 167

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

Processing and fracture toughness of nano-sized Cu-dispersed Al₂O₃ composites

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Keywords

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