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Ti thin films deposited by high-power impulse magnetron sputtering in an industrial system: Process parameters for a low surface roughness

Sulial, Nyasha J. ; Goosen, William E. ; van Vuuren, Arno Janse ; Olivier, Ezra J. ; Bakhit, Babak ; Högberg, Hans ; Darakchieva, Vanya LU and Botha, Johannes R. (2022) In Vacuum 195.
Abstract
The influence of the choice of process parameters in an industrial high-power impulse magnetron sputtering (HiPIMS) system on the surface roughness and crystallinity of Ti coatings is presented in this work. A current density of 1 A/cm2 was kept constant by varying the pulse frequency to control the average power. The films were characterised by scanning electron microscopy, atomic force microscopy, X-ray diffraction and transmission electron microscopy. The surface roughness, residual stress and grain size are discussed as a function of the HiPIMS target average power in the 1.45–7.90 kW range. The surface roughness, ranging from 14 to 24 nm, is lower than that of the SnO2 glass substrate, and has a non-linear... (More)
The influence of the choice of process parameters in an industrial high-power impulse magnetron sputtering (HiPIMS) system on the surface roughness and crystallinity of Ti coatings is presented in this work. A current density of 1 A/cm2 was kept constant by varying the pulse frequency to control the average power. The films were characterised by scanning electron microscopy, atomic force microscopy, X-ray diffraction and transmission electron microscopy. The surface roughness, residual stress and grain size are discussed as a function of the HiPIMS target average power in the 1.45–7.90 kW range. The surface roughness, ranging from 14 to 24 nm, is lower than that of the SnO2 glass substrate, and has a non-linear dependence on the HiPIMS power. X-ray 2θ diffraction shows (100), (001) and (101) orientation of the film crystallites. The peak shifts reveal a gradual reduction in residual stress as target power increases. Further, the effect of target power on crystal grain length and geometric orientation is also determined. (Less)
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author
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publishing date
type
Contribution to journal
publication status
published
subject
in
Vacuum
volume
195
article number
110698
pages
10 pages
publisher
Elsevier
external identifiers
  • scopus:85118248634
ISSN
0042-207X
DOI
10.1016/j.vacuum.2021.110698
language
English
LU publication?
no
id
322ff0fd-d299-4de2-a057-4f6b3049bc5c
date added to LUP
2022-12-06 17:27:57
date last changed
2022-12-07 14:46:54
@article{322ff0fd-d299-4de2-a057-4f6b3049bc5c,
  abstract     = {{The influence of the choice of process parameters in an industrial high-power impulse magnetron sputtering (HiPIMS) system on the surface roughness and crystallinity of Ti coatings is presented in this work. A current density of 1 A/cm<sup>2</sup> was kept constant by varying the pulse frequency to control the average power. The films were characterised by scanning electron microscopy, atomic force microscopy, X-ray diffraction and transmission electron microscopy. The surface roughness, residual stress and grain size are discussed as a function of the HiPIMS target average power in the 1.45–7.90 kW range. The surface roughness, ranging from 14 to 24 nm, is lower than that of the SnO<sub>2</sub> glass substrate, and has a non-linear dependence on the HiPIMS power. X-ray 2<i>θ</i> diffraction shows (100), (001) and (101) orientation of the film crystallites. The peak shifts reveal a gradual reduction in residual stress as target power increases. Further, the effect of target power on crystal grain length and geometric orientation is also determined.}},
  author       = {{Sulial, Nyasha J. and Goosen, William E. and van Vuuren, Arno Janse and Olivier, Ezra J. and Bakhit, Babak and Högberg, Hans and Darakchieva, Vanya and Botha, Johannes R.}},
  issn         = {{0042-207X}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Vacuum}},
  title        = {{Ti thin films deposited by high-power impulse magnetron sputtering in an industrial system: Process parameters for a low surface roughness}},
  url          = {{http://dx.doi.org/10.1016/j.vacuum.2021.110698}},
  doi          = {{10.1016/j.vacuum.2021.110698}},
  volume       = {{195}},
  year         = {{2022}},
}