Premium
Near Superhydrophobic Carbon Nanotube Coatings Obtained via Electrophoretic Deposition on Low‐Alloy Steels
Author(s) -
Alderete Bruno,
MacLucas Timothy,
Espin Douglas,
Brühl Sonia P.,
Mücklich Frank,
Suarez Sebastian
Publication year - 2021
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.202001448
Subject(s) - materials science , electrophoretic deposition , coating , carbon nanotube , rod , corrosion , composite material , superhydrophobic coating , magnesium alloy , nanotube , chemical engineering , metallurgy , nanotechnology , alloy , medicine , alternative medicine , pathology , engineering
Sucker rods are a key element in certain oil‐extraction processes as they link the motor group on the surface with the pumps located downhole. During the transport from the production site toward the extraction well, these components are prone to corrosion. A hydrophobic carbon nanotube (CNT) coating, deposited via electrophoretic deposition (EPD), is proposed as a protective layer, shielding the rods from harsh environmental conditions. Three different coating systems are considered and thoroughly characterized (depending on the additive that is used to deposit the CNT), namely, magnesium nitrate hexahydrate (Mg–Nit), triethylamine (TEA), and a duplex coating (DD). The latter presents an approach which combines the advantages of each additive, mechanical stability from Mg–Nit and strong hydrophobicity from TEA (near superhydrophobic). The former coatings are further processed to overcome their individual shortcomings, resulting in an increase in the coating's stability for TEA coating, as well as transforming the hydrophilic Mg–Nit surface into a hydrophobic surface.