The Microstructural Effects on the Mechanical and Thermal Properties of Pulsed Electric Current Sintered Cu-Al2O3 Composites

R. Ritasalo; X.W. Liu; O. Söderberg; A. Keski-Honkola; V. Pitkänen; S-P. Hannula

doi:10.1016/j.proeng.2011.04.023

The Microstructural Effects on the Mechanical and Thermal Properties of Pulsed Electric Current Sintered Cu-Al2O3 Composites

R. Ritasalo, X.W. Liu, O. Söderberg, A. Keski-Honkola, V. Pitkänen, S-P. Hannula

Research output: Contribution to journal › Conference article › Scientific › peer-review

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Abstract

In this work, the influences of the microstructure on the mechanical and thermal properties of pulsed electric currentsintered (PECS) Cu-Al2O3 composites are investigated. The process parameters were optimized for four different grades ofcomposite powders to obtain dense samples (98-99.6%T.D.). Higher hardness and better thermal stability were attained tothe samples compacted from commercial internally oxidized (IO) powders than to the compacts made from the chemicallysynthesised experimental powders. This difference was attributed to the distribution and size of Al2O3-particles in the twotypes of composites. The CTE values of all the compacts were between 17 and 20 x 10-6K-1 (370-770 K). The results showthat PECS can be used to produce dense high quality Cu-Al2O3 composites.

Original language	English
Pages (from-to)	124-129
Number of pages	6
Journal	Procedia Engineering
Volume	10
DOIs	https://doi.org/10.1016/j.proeng.2011.04.023
Publication status	Published - 2011
MoE publication type	A4 Article in a conference publication
Event	International Conference on the Mechanical Behavior of Materials - Milano, Italy Duration: 5 Jun 2011 → 9 Jun 2011 Conference number: 11

Keywords

Copper composites
Pulsed electric current sintering (PECS)
Microstructure
Nanoindentation
Thermal stability
CTE

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10.1016/j.proeng.2011.04.023

1-s2.0-S1877705811002116-mainFinal published version, 1.38 MBLicence: CC BY-NC-ND

http://dx.doi.org/10.1016/j.proeng.2011.04.023

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@article{b78545cae79d434a9609ff8aaed8b23c,

title = "The Microstructural Effects on the Mechanical and Thermal Properties of Pulsed Electric Current Sintered Cu-Al2O3 Composites",

abstract = "In this work, the influences of the microstructure on the mechanical and thermal properties of pulsed electric currentsintered (PECS) Cu-Al2O3 composites are investigated. The process parameters were optimized for four different grades ofcomposite powders to obtain dense samples (98-99.6%T.D.). Higher hardness and better thermal stability were attained tothe samples compacted from commercial internally oxidized (IO) powders than to the compacts made from the chemicallysynthesised experimental powders. This difference was attributed to the distribution and size of Al2O3-particles in the twotypes of composites. The CTE values of all the compacts were between 17 and 20 x 10-6K-1 (370-770 K). The results showthat PECS can be used to produce dense high quality Cu-Al2O3 composites.",

keywords = "Copper composites, Pulsed electric current sintering (PECS), Microstructure, Nanoindentation, Thermal stability, CTE",

author = "R. Ritasalo and X.W. Liu and O. S{\"o}derberg and A. Keski-Honkola and V. Pitk{\"a}nen and S-P. Hannula",

year = "2011",

doi = "10.1016/j.proeng.2011.04.023",

language = "English",

volume = "10",

pages = "124--129",

journal = "Procedia Engineering",

issn = "1877-7058",

publisher = "Elsevier BV",

note = "International Conference on the Mechanical Behavior of Materials, ICM ; Conference date: 05-06-2011 Through 09-06-2011",

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TY - JOUR

T1 - The Microstructural Effects on the Mechanical and Thermal Properties of Pulsed Electric Current Sintered Cu-Al2O3 Composites

AU - Ritasalo, R.

AU - Liu, X.W.

AU - Söderberg, O.

AU - Keski-Honkola, A.

AU - Pitkänen, V.

AU - Hannula, S-P.

N1 - Conference code: 11

PY - 2011

Y1 - 2011

N2 - In this work, the influences of the microstructure on the mechanical and thermal properties of pulsed electric currentsintered (PECS) Cu-Al2O3 composites are investigated. The process parameters were optimized for four different grades ofcomposite powders to obtain dense samples (98-99.6%T.D.). Higher hardness and better thermal stability were attained tothe samples compacted from commercial internally oxidized (IO) powders than to the compacts made from the chemicallysynthesised experimental powders. This difference was attributed to the distribution and size of Al2O3-particles in the twotypes of composites. The CTE values of all the compacts were between 17 and 20 x 10-6K-1 (370-770 K). The results showthat PECS can be used to produce dense high quality Cu-Al2O3 composites.

AB - In this work, the influences of the microstructure on the mechanical and thermal properties of pulsed electric currentsintered (PECS) Cu-Al2O3 composites are investigated. The process parameters were optimized for four different grades ofcomposite powders to obtain dense samples (98-99.6%T.D.). Higher hardness and better thermal stability were attained tothe samples compacted from commercial internally oxidized (IO) powders than to the compacts made from the chemicallysynthesised experimental powders. This difference was attributed to the distribution and size of Al2O3-particles in the twotypes of composites. The CTE values of all the compacts were between 17 and 20 x 10-6K-1 (370-770 K). The results showthat PECS can be used to produce dense high quality Cu-Al2O3 composites.

KW - Copper composites

KW - Pulsed electric current sintering (PECS)

KW - Microstructure

KW - Nanoindentation

KW - Thermal stability

KW - CTE

UR - http://dx.doi.org/10.1016/j.proeng.2011.04.023

U2 - 10.1016/j.proeng.2011.04.023

DO - 10.1016/j.proeng.2011.04.023

M3 - Conference article

VL - 10

SP - 124

EP - 129

JO - Procedia Engineering

JF - Procedia Engineering

SN - 1877-7058

T2 - International Conference on the Mechanical Behavior of Materials

Y2 - 5 June 2011 through 9 June 2011

ER -

The Microstructural Effects on the Mechanical and Thermal Properties of Pulsed Electric Current Sintered Cu-Al2O3 Composites

Abstract

Keywords

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