Electrodeposition of hydroxyapatite/functionalized carbon nanotubes (HAp/fCNTs) coatings on the surface of 316L stainless steel

Nguyen Thi Thom, Pham Thi Nam, Nguyen Thu Phuong, Cao Thi Hong, Nguyen Van Trang, Nguyen Thi Xuyen, Dinh Thi Mai Thanh
Author affiliations

Authors

  • Nguyen Thi Thom Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay, Ha Noi, Viet Nam
  • Pham Thi Nam Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay, Ha Noi, Viet Nam
  • Nguyen Thu Phuong Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay, Ha Noi, Viet Nam
  • Cao Thi Hong Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay, Ha Noi, Viet Nam
  • Nguyen Van Trang Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay, Ha Noi, Viet Nam
  • Nguyen Thi Xuyen Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay, Ha Noi, Viet Nam
  • Dinh Thi Mai Thanh Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay, Ha Noi, Viet Nam

DOI:

https://doi.org/10.15625/2525-2518/55/6/9153

Keywords:

Hydroxyapatite, fCNTs, HAp/fCNTs nanocomposite, 316LSS, electrodeposition

Abstract

The coatings of hydroxyapatite/functionalized carbon nanotubes (HAp/fCNTs) were successfully synthesized on the surface of 316L stainless steel (316L SS) by electrodeposition. To improve the dispersion of CNTs into the electrolyte, CNTs were functionalized in the mixture of 67 % HNO3 and 98 % H2SO4 before electrodeposition coatings to form fCNTs. Different amounts of fCNTs were  incorporated into the apatite coatings by adding fCNTs into the  electrolyte solution. In this study, Fourier Transform Infrared Spectroscopy (FT-IR), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Thermal Gravimetric Analysis (TGA) and mechanical techniques were used to analyze characteristic of fCNTs and the HAp/fCNTs coatings. The FTIR spectra of CNTs before and after acid treated process show that CNTs are functionalized by chemically method with carboxylic acid groups (–COOH) on their surface. The SEM images confirm that the functionalized process by the acid mixture does not change the morphology of CNTs. The nanocomposite coatings contain single phase of HAp and CNTs with the coating thickness of 6.9 µm and the amount of fCNTs in the coatings is 7.25 %. With 0.5 g/L of fCNTs in the electrolyte solution, the solubility of the coating decreases in comparision with pure HAp coatings.

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Published

11-12-2017

How to Cite

[1]
N. T. Thom, “Electrodeposition of hydroxyapatite/functionalized carbon nanotubes (HAp/fCNTs) coatings on the surface of 316L stainless steel”, Vietnam J. Sci. Technol., vol. 55, no. 6, pp. 706–715, Dec. 2017.

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Section

Materials

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