Advanced

Modified stainless steel surfaces targeted to reduce fouling - surface characterization

Santos, Olga LU ; Nylander, Tommy LU ; Rosmaninho, R; Rizzo, G; Yiantsios, S; Andritsos, N; Karabelas, A; Muller-Steinhagen, H; Melo, L and Boulange- Petermann, L, et al. (2004) In Journal of Food Engineering 64(1). p.63-79
Abstract
The surface properties of several modified stainless steel samples were characterized according to their chemical composition, roughness, topography and wettability. The modifications tested were SiF3+ and MoS22+ ion implantation; diamond-like carbon (DLC) sputtering: DLC. DLC-Si-O and SiOx, plasma enhanced chemical vapor deposition (PECVD); autocatalytic Ni-P-PTFE and silica coating. X-ray photoelectron spectroscopy (XPS) and X-ray microanalysis were applied to determine the surface chemical composition. Atomic force microscopy (AFM) and stylus-type instruments were used for roughness determination, and the surface topography was imaged with AFM and scanning electron microscopy (SEM). The contact angle and surface tension were measured... (More)
The surface properties of several modified stainless steel samples were characterized according to their chemical composition, roughness, topography and wettability. The modifications tested were SiF3+ and MoS22+ ion implantation; diamond-like carbon (DLC) sputtering: DLC. DLC-Si-O and SiOx, plasma enhanced chemical vapor deposition (PECVD); autocatalytic Ni-P-PTFE and silica coating. X-ray photoelectron spectroscopy (XPS) and X-ray microanalysis were applied to determine the surface chemical composition. Atomic force microscopy (AFM) and stylus-type instruments were used for roughness determination, and the surface topography was imaged with AFM and scanning electron microscopy (SEM). The contact angle and surface tension were measured with the Wilhelmy plate method and the sessile drop method. For thick modified layers, only the elements of the coating were detected at the surface, whereas for thin layers the surface composition determined was that of the stainless steel substrate. The roughness of the 2R (cold rolled and annealed in a protective atmosphere) Surfaces was not altered by the modification techniques (except for the Ni-P-PTFE coating), while for the 2B (cold rolled. heat treated, pickled and skinpassed) surfaces an increase in roughness was observed. The silica coating produced surfaces with consistent roughness, independent of which steel substrate was used. DLC sputtering and Ni-P-PTFE coating produced surfaces with the highest roughness. All modified surfaces revealed a similar surface topography with the exception of the Ni-P-PTFE coating, for which the coating masked the underlying steel topography. In terms of wettability, the SiOx-plasmaCVD and NiP-PTFE coating, techniques produced the most hydrophilic and hydrophobic surfaces, respectively. (C) 2003 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
, et al. (More)
(Less)
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Surface energy, Roughness, Fouling, Chemical composition, Modified stainless steel
in
Journal of Food Engineering
volume
64
issue
1
pages
63 - 79
publisher
Elsevier
external identifiers
  • wos:000221010000007
  • scopus:10744231875
ISSN
0260-8774
DOI
10.1016/j.jfoodeng.2003.09.013
language
English
LU publication?
yes
id
d180cf03-671d-4d1b-9a20-ae551e5dd5a0 (old id 139227)
date added to LUP
2007-07-12 11:07:14
date last changed
2017-10-01 04:51:09
@article{d180cf03-671d-4d1b-9a20-ae551e5dd5a0,
  abstract     = {The surface properties of several modified stainless steel samples were characterized according to their chemical composition, roughness, topography and wettability. The modifications tested were SiF3+ and MoS22+ ion implantation; diamond-like carbon (DLC) sputtering: DLC. DLC-Si-O and SiOx, plasma enhanced chemical vapor deposition (PECVD); autocatalytic Ni-P-PTFE and silica coating. X-ray photoelectron spectroscopy (XPS) and X-ray microanalysis were applied to determine the surface chemical composition. Atomic force microscopy (AFM) and stylus-type instruments were used for roughness determination, and the surface topography was imaged with AFM and scanning electron microscopy (SEM). The contact angle and surface tension were measured with the Wilhelmy plate method and the sessile drop method. For thick modified layers, only the elements of the coating were detected at the surface, whereas for thin layers the surface composition determined was that of the stainless steel substrate. The roughness of the 2R (cold rolled and annealed in a protective atmosphere) Surfaces was not altered by the modification techniques (except for the Ni-P-PTFE coating), while for the 2B (cold rolled. heat treated, pickled and skinpassed) surfaces an increase in roughness was observed. The silica coating produced surfaces with consistent roughness, independent of which steel substrate was used. DLC sputtering and Ni-P-PTFE coating produced surfaces with the highest roughness. All modified surfaces revealed a similar surface topography with the exception of the Ni-P-PTFE coating, for which the coating masked the underlying steel topography. In terms of wettability, the SiOx-plasmaCVD and NiP-PTFE coating, techniques produced the most hydrophilic and hydrophobic surfaces, respectively. (C) 2003 Elsevier Ltd. All rights reserved.},
  author       = {Santos, Olga and Nylander, Tommy and Rosmaninho, R and Rizzo, G and Yiantsios, S and Andritsos, N and Karabelas, A and Muller-Steinhagen, H and Melo, L and Boulange- Petermann, L and Gabet, C and Braem, Alan and Trägårdh, Christian and Paulsson, Marie},
  issn         = {0260-8774},
  keyword      = {Surface energy,Roughness,Fouling,Chemical composition,Modified stainless steel},
  language     = {eng},
  number       = {1},
  pages        = {63--79},
  publisher    = {Elsevier},
  series       = {Journal of Food Engineering},
  title        = {Modified stainless steel surfaces targeted to reduce fouling - surface characterization},
  url          = {http://dx.doi.org/10.1016/j.jfoodeng.2003.09.013},
  volume       = {64},
  year         = {2004},
}