The microstructure and mechanical properties of nanometer Al2O3/Cu composite fabricated by internal oxidation

Lei Quo, Shuqiang Guo, Shuai Ma, Jie Liu, Weizhong Ding

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The fabrication of the copper matrix composites strengthened with dispersal nanometer Al2O3 is investigated. The investigation result shows that the atomized Cu-Al alloys powders mixed with Cu2O oxidant powders were internally oxidized at 1173K for an hour in nitrogen atmosphere. X-ray and EDS analysis indicates that the particles formed during internal oxidation consist of a large amount of CuAlO2 and a certain amount of α-Al2O3. After hydrogen reduction at 1173K for an hour, the particles turn to be α-AlO3. TEM observation shows that the obtained α-Al2O3 particles are uniformly distributed in copper grain, and the mean size of these particles is about 10 nm. As compared with the composite by a previous sintering, the main properties of the composite with 50% cold deformation are better.

Original languageEnglish
Title of host publicationTMS Annual Meeting
PublisherMinerals, Metals and Materials Society
Pages591-596
Number of pages6
EditionCONFCODENUMBER
ISBN (Electronic)9781119225836
StatePublished - 2016
Externally publishedYes
Event145th Annual Meeting and Exhibition, TMS 2016 - Nashville, United States
Duration: 14 Feb 201618 Feb 2016

Publication series

NameTMS Annual Meeting
NumberCONFCODENUMBER
Volume0

Conference

Conference145th Annual Meeting and Exhibition, TMS 2016
Country/TerritoryUnited States
CityNashville
Period14/02/1618/02/16

Keywords

  • AlO/Cu composite
  • Internal oxidation
  • Microstructure
  • Property

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