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Influence of MWCNT dispersion on corrosion behaviour of their Mg composites
Author(s) -
Li Q.,
Turhan M. C.,
Rottmair C. A.,
Singer R. F.,
Virtanen S.
Publication year - 2012
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201006023
Subject(s) - materials science , corrosion , carbon nanotube , dispersion (optics) , composite material , magnesium , galvanic corrosion , magnesium alloy , alloy , homogeneous , carbon steel , electrical resistivity and conductivity , galvanic cell , metallurgy , physics , optics , thermodynamics , electrical engineering , engineering
Carbon nanotubes (CNTs) have been demonstrated as good reinforcements to improve mechanical properties of magnesium alloys. This study reports on the influence of CNT dispersion on corrosion behaviour of their Mg composites. Experiments revealed that the corrosion rate is drastically increased by adding CNTs to the magnesium alloy due to galvanic coupling. Moreover, a homogeneous CNT dispersion leads to reduced corrosion resistivity. Surface pre‐treatment is also found to be critical for the corrosion performance for both 1 and 5 wt% CNT composites.