Title: Structure and mechanical properties of W-Se-C/diamond-like carbon and W-Se/diamond-like carbon bi-layer coatings prepared by pulsed laser deposition
Authors: Fominski, V.Yu. ×
Grigoriev, S.N.
Celis, Jean-Pierre
Romanov, R.I.
Oshurko, V.B. #
Issue Date: 31-Aug-2012
Publisher: Elsevier Sequoia
Series Title: Thin Solid Films vol:520 issue:21 pages:6476-6483
Abstract: Bi-layer W–Se–C/diamond-like carbon (DLC) and WSex/DLC coatings were obtained by standard and shadowmasked pulsed laser co-deposition from WSe2 and graphite targets. W–Se–C coatings appeared as nanocomposites containing quasi-amorphous WSe2, WC, spherical β-W nanocrystalline particles encapsulated in WSe2 amorphous shell, and amorphous carbon phases. In WSex/DLC coatings, the formation of chemical bonds between W and C atoms was noticed at the interface. An increase of the C concentration over 40 at.% increases hardness and elasticity (up to 2 times at ~60 at.%C), and the Se/W ratio was always close to 1.4. The use of shadow-masked configuration avoids the deposition of micro- and nanoparticles. However, this method leads to a substantial increase of the Se content (Se/W≥4), and the coatings became softer.
ISSN: 0040-6090
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Surface and Interface Engineered Materials
× corresponding author
# (joint) last author

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