Near Superhydrophobic Carbon Nanotube Coatings Obtained via Electrophoretic Deposition on Low-Alloy Steels,Advanced Engineering Materials

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Near Superhydrophobic Carbon Nanotube Coatings Obtained via Electrophoretic Deposition on Low-Alloy Steels
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2021-01-20 , DOI: 10.1002/adem.202001448
Bruno Alderete _{1,

2} , Timothy MacLucas ₁ , Douglas Espin ₃ , Sonia P. Brühl ₂ , Frank Mücklich ₁ , Sebastian Suarez ₁

Affiliation

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.

中文翻译：

在低合金钢上通过电泳沉积获得的近超疏水碳纳米管涂层

抽油杆是某些抽油过程中的关键要素，因为抽油杆将地面上的马达组与井下的泵连接起来。从生产现场向提取井的运输过程中，这些组件容易受到腐蚀。提出了通过电泳沉积（EPD）沉积的疏水碳纳米管（CNT）涂层作为保护层，以保护棒免受恶劣的环境条件的侵害。考虑并彻底表征了三种不同的涂层系统（取决于用于沉积CNT的添加剂），即六水合硝酸镁（Mg–Nit），三乙胺（TEA）和双涂层（DD）。后者提出了一种将每种添加剂的优点，Mg-Nit的机械稳定性和TEA（近超疏水）的强疏水性相结合的方法。

更新日期：2021-01-20

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