Corrosion behaviour of cast and deformed copper-carbon nanotube composite wires in chloride media

Research output: Contribution to journalArticleScientificpeer-review


Research units

  • Nexans Research Centre Lens
  • Silesian University of Technology


Copper-carbon nanotube (Cu-CNT) composite wires were produced by casting, rolling and drawing to produce composites with 0.05 wt% CNTs embedded at the grain boundaries of copper. The corrosion properties of wires were investigated in mild and highly corrosive media: solution I consisting of 0.05 wt% sodium chloride (NaCl) and 0.4 wt% ammonium sulfate (NH4)2SO4 and solution II consisting of 3.5 wt% NaCl. Composite samples showed similar behaviour and corrosion rates as oxygen free copper in solution I. In 3.5 wt% NaCl all composite samples showed slight improvement in corrosion resistance when compared with oxygen free copper. The corroded wire surfaces after five days in 3.5 wt% NaCl showed less dissolution for composite samples compared with pure copper. The observed decreased corrosion rate for composite wires with embedded CNTs is suggested to be due to reduced cathodic reaction. Galvanic current density between pure copper and carbon nanotubes was observed by mixed potential theory and zero resistance amperometry, neither of which showed tendency towards microgalvanic activity. The results indicate similar or slightly improved corrosion properties of copper containing small additions of CNTs in chloride containing media.


Original languageEnglish
Pages (from-to)218-226
Number of pages9
JournalJournal of Alloys and Compounds
Publication statusPublished - 25 May 2018
MoE publication typeA1 Journal article-refereed

    Research areas

  • Carbon nanotube, Composite, Copper, Corrosion, Seawater, Wire

ID: 18270192