Publication detail

Corrosion resistance and surface microstructure of Mg3N2/SS thin films by plasma focus instrument

HABIBI, M. SADEGHI, M. ARMAN, A. SOBOLA, D. LUNA, C. MIRZAEI, S. ZELATI, A. DA FONSECA, H.D. ŢĂLU, Ş.

Original Title

Corrosion resistance and surface microstructure of Mg3N2/SS thin films by plasma focus instrument

Type

journal article in Web of Science

Language

English

Original Abstract

Utilizing a plasma focus (PF) instrument, magnesium nitride (Mg3N2) thin films were synthesized on stainless steel substrates. Twenty five optimum focus shots at 8 cm distance from the anode tip were used to deposit the films at different angular positions regarded to the anode axis. Scanning electron microscopy (SEM), atomic force microscopy (AFM), and X-ray diffraction (XRD) analyses were performed to assess the surface morphology and structural characteristics of Mg3N2 films. Based on AFM images, these films were studied to understand the effect of angular position variation on their surfaces through morphological and fractal parameters. By increasing the angle, we verify that the grain size decreased from 130(0) nm to 75(5) nm and also the mean quadratic surface roughness of the films reduced in its average values from (28.97 +/- 3.24) nm to (23.10 +/- 1.34) nm. Power spectrum density analysis indicated that films become more self-affine at larger angles. Furthermore, the corrosion behavior of the films was investigated through a potentiodynamic polarization test in H2SO4 solution. It was found that the ion energy and flux, varying with the angular positions from the anode tip, directly affected the nanostructured roughness and surface morphology of the samples. The electrochemical studies of films show that the uncoated sample presented the lowest corrosion resistance. The highest corrosion resistance was obtained for the sample deposited with 25 optimum shots and at 0 degrees angular position reaching a reduction in the corrosion current density of almost 800 times compared to the pure stainless steel-304 substrate.

Keywords

corrosion; magnesium nitride films; microstructure; morphology; plasma focus; stainless steel

Authors

HABIBI, M.; SADEGHI, M.; ARMAN, A.; SOBOLA, D.; LUNA, C.; MIRZAEI, S.; ZELATI, A.; DA FONSECA, H.D.; ŢĂLU, Ş.

Released

1. 8. 2022

ISBN

1097-0029

Periodical

MICROSCOPY RESEARCH AND TECHNIQUE

Year of study

85

Number

8

State

United States of America

Pages from

2880

Pages to

2893

Pages count

14

URL

https://analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/jemt.24138

BibTex

@article{BUT178471,
  author="HABIBI, M. and SADEGHI, M. and ARMAN, A. and SOBOLA, D. and LUNA, C. and MIRZAEI, S. and ZELATI, A. and DA FONSECA, H.D. and ŢĂLU, Ş.",
  title="Corrosion resistance and surface microstructure of Mg3N2/SS thin films by plasma focus instrument",
  journal="MICROSCOPY RESEARCH AND TECHNIQUE",
  year="2022",
  volume="85",
  number="8",
  pages="2880--2893",
  doi="10.1002/jemt.24138",
  issn="1097-0029",
  url="https://analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/jemt.24138"
}