Effects of tungsten pre-implanted layer on corrosion and electrochemical characteristics of amorphous carbon films on stainless steel

Chenglong Liu; Ming Xu; Wei Zhang; Shihao Pu; Paul K. Chu

doi:10.1016/j.diamond.2008.01.114

Author(s)

Chenglong Liu
Ming Xu
Wei Zhang
Shihao Pu
Paul K. Chu

Detail(s)

Original language	English
Pages (from-to)	1738-1742
Journal / Publication	Diamond and Related Materials
Volume	17
Issue number	7-10
Publication status	Published - Jul 2008

Link(s)

DOI	DOI https://doi.org/10.1016/j.diamond.2008.01.114 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-48849109190&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(4e27f9e6-ffc4-4d43-a790-58b7d3510c67).html

Abstract

Amorphous carbon (a-C) films have been deposited on untreated and W pre-implanted (20 kV, 3 × 10¹⁷ ions/cm²) stainless steel substrates by plasma immersion ion implantation and deposition (PIII&D). X-ray photoelectron spectroscopy indicates that the transition layer consists of tungsten carbide (WC) and C. The corrosion behavior of the coatings is investigated electrochemically in 37 ± 1 °C simulated body fluids. In comparison with the a-C films, the a-C films with a W pre-implanted layer exhibit more positive open-circuit potentials, lower corrosion current density, and higher protection efficiency as indicated by potentiodynamic polarization tests. Electrochemical impedance spectroscopy reveals that the W pre-implantation layer increases the corrosion resistance of the a-C coatings in test solutions. The continuous structure caused by W pre-implantation layer is believed to not only offer good adhesion between the a-C film and steel substrate but also act as a barrier to mitigate penetration of water molecules and ions. © 2008 Elsevier B.V. All rights reserved.

Research Area(s)

52.77.Dq, 81.05.Uw, 81.65.Kn, Amorphous carbon films, Carbon, diamond, graphite, Corrosion, Corrosion protection, Plasma-based ion implantation and deposition in physics of plasmas, Stainless steel, Tungsten implantation

Citation Format(s)

[ RIS ] [ BibTeX ]

Effects of tungsten pre-implanted layer on corrosion and electrochemical characteristics of amorphous carbon films on stainless steel. / Liu, Chenglong; Xu, Ming; Zhang, Wei et al.
In: Diamond and Related Materials, Vol. 17, No. 7-10, 07.2008, p. 1738-1742.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Liu, C, Xu, M, Zhang, W, Pu, S & Chu, PK 2008, 'Effects of tungsten pre-implanted layer on corrosion and electrochemical characteristics of amorphous carbon films on stainless steel', Diamond and Related Materials, vol. 17, no. 7-10, pp. 1738-1742. https://doi.org/10.1016/j.diamond.2008.01.114

Liu, C., Xu, M., Zhang, W., Pu, S., & Chu, P. K. (2008). Effects of tungsten pre-implanted layer on corrosion and electrochemical characteristics of amorphous carbon films on stainless steel. Diamond and Related Materials, 17(7-10), 1738-1742. https://doi.org/10.1016/j.diamond.2008.01.114

Liu C, Xu M, Zhang W, Pu S, Chu PK. Effects of tungsten pre-implanted layer on corrosion and electrochemical characteristics of amorphous carbon films on stainless steel. Diamond and Related Materials. 2008 Jul;17(7-10):1738-1742. doi: 10.1016/j.diamond.2008.01.114

Liu, Chenglong ; Xu, Ming ; Zhang, Wei et al. / Effects of tungsten pre-implanted layer on corrosion and electrochemical characteristics of amorphous carbon films on stainless steel. In: Diamond and Related Materials. 2008 ; Vol. 17, No. 7-10. pp. 1738-1742.