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 journalConference articleScientificpeer-review

35 Citations (Scopus)
132 Downloads (Pure)

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 languageEnglish
Pages (from-to)124-129
Number of pages6
JournalProcedia Engineering
Volume10
DOIs
Publication statusPublished - 2011
MoE publication typeA4 Article in a conference publication
EventInternational Conference on the Mechanical Behavior of Materials - Milano, Italy
Duration: 5 Jun 20119 Jun 2011
Conference number: 11

Keywords

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

Fingerprint

Dive into the research topics of 'The Microstructural Effects on the Mechanical and Thermal Properties of Pulsed Electric Current Sintered Cu-Al2O3 Composites'. Together they form a unique fingerprint.

Cite this