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

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Corrosion behaviour of cast and deformed copper-carbon nanotube composite wires in chloride media. / Hannula, Pyry Mikko; Masquelier, Nicolas; Lassila, Sanni; Aromaa, Jari; Janas, Dawid; Forsén, Olof; Lundström, Mari.

In: Journal of Alloys and Compounds, Vol. 746, 25.05.2018, p. 218-226.

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@article{9cd6a5401eab4e25ba2e271a105d6342,
title = "Corrosion behaviour of cast and deformed copper-carbon nanotube composite wires in chloride media",
abstract = "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.",
keywords = "Carbon nanotube, Composite, Copper, Corrosion, Seawater, Wire",
author = "Hannula, {Pyry Mikko} and Nicolas Masquelier and Sanni Lassila and Jari Aromaa and Dawid Janas and Olof Fors{\'e}n and Mari Lundstr{\"o}m",
note = "| openaire: EC/H2020/609057/EU//ULTRAWIRE",
year = "2018",
month = "5",
day = "25",
doi = "10.1016/j.jallcom.2018.02.289",
language = "English",
volume = "746",
pages = "218--226",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier Science",

}

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TY - JOUR

T1 - Corrosion behaviour of cast and deformed copper-carbon nanotube composite wires in chloride media

AU - Hannula, Pyry Mikko

AU - Masquelier, Nicolas

AU - Lassila, Sanni

AU - Aromaa, Jari

AU - Janas, Dawid

AU - Forsén, Olof

AU - Lundström, Mari

N1 - | openaire: EC/H2020/609057/EU//ULTRAWIRE

PY - 2018/5/25

Y1 - 2018/5/25

N2 - 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.

AB - 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.

KW - Carbon nanotube

KW - Composite

KW - Copper

KW - Corrosion

KW - Seawater

KW - Wire

UR - http://www.scopus.com/inward/record.url?scp=85042654126&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2018.02.289

DO - 10.1016/j.jallcom.2018.02.289

M3 - Article

VL - 746

SP - 218

EP - 226

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

ER -

ID: 18270192