Kết hợp vật liệu tổng hợp nano Fe3O4/CNTs trong một lớp phủ epoxy để bảo vệ chống ăn mòn cho thép carbon

• Ngôn ngữ: vie
• Ký hiệu phân loại: 667.9 Coatings and coating
• Thông tin xuất bản: Nanoscience and Nanotechnology, 2014
• Mô tả vật lý: 45298
• Bộ sưu tập: Metadata
• ID: 506712

Tóm tắt

In this study Fe3O4/CNTs composite with magnetic property was prepared by attaching magnetic nanoparticles (Fe3O4) to carbon nanotubes (CNTs) by hydrothermal method. The obtained Fe3O4/CNTs composite was characterized by Fourier transform infrared (FTIR.) spectroscopy, powder x-ray diffraction and transmission electron microscopy. The Fe3O4/CNTs composite was then incorporated into an epoxy coating at concentration of 3 wt percent. Corrosion protection of epoxy coating containing Fe3O4/CNTs composite was evaluated by electrochemical impedance spectroscopy and adhesion measurement. The impedance measurements show that Fe3O4/CNTs composite enhanced the corrosion protection of epoxy coating. The corrosion resistance of the carbon steel coated by epoxy coating containing Fe3O4/CNTs composite was significantly higher than that of carbon steel coated by clear epoxy coating and epoxy coating containing CNTs. FESEM photographs of fracture surface of coatings showed good dispersion of Fe3O4/CNTs composite in the epoxy matrix.