<div class="csl-bib-body">
<div class="csl-entry">Pölzlberger, D. E., Fuchs, D., Gachot, C., & Riedl-Tragenreif, H. (2025, September 17). <i>Influence of Mo on the mechanical and tribological properties of DCMS deposited Ti1-xMoxB2+z thin films</i> [Poster Presentation]. 18th European Congress and Exhibition on Advanced Materials and Processes (FEMS EUROMAT 2025), Granada, Spain.</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/223281
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dc.description.abstract
Transition metal borides (TMBs) represent a highly promising family of materials for functional coatings due to their abundance, cost-effectiveness, and exceptional mechanical properties. These include high melting temperatures, hardness of up to 60 GPa, excellent chemical and thermal conductivity, and outstanding resistance to wear. Theoretical predictions by density functional theory assessing the elastic constants revealed that the formation of ternary Ti-Mo-B2±z might be a suitable approach to gain a less brittle character. In addition, Mo is also known to form self-lubricating phases such as MoOx (Magnéli phases), which typically helps to reduce friction. To study the effect of Mo on TiB2±z three different target compositions were used for the non-reactive growth of ternary Ti1-xMoxB2±z thin films: TiB2/MoB 95/5 mol%, TiB2/MoB 90/10 mol%, and TiB2/MoB 80/20 mol%. The binary TiB2+z system was deposited with a TiB2/C 99/1 wt.% target. In addition, direct current magnetron sputtering (DCMS) and high-power impulse magnetron sputtering (HiPIMS) were employed to investigate the influence of different deposition techniques. The structural and mechanical properties of the coatings were characterized by a wide variety of methods, such as scanning electron microscopy, X-ray diffraction analysis, and nanoindentation. The chemical composition was determined by inductively coupled plasma optical emission spectrometry and elastic recoil detection analysis. To verify the suggested enhancement on the brittle behavior of Ti1-xMoxB2±z, fracture characteristics, such as KC and KIC, have been determined by cube corner indentation and in-situ micro-mechanical bending tests, respectively. Furthermore, tribological tests were conducted at room temperature and high temperatures of up to 600 °C to investigate the influence of Mo on the friction coefficient and wear mechanisms.
en
dc.description.sponsorship
FWF - Österr. Wissenschaftsfonds
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dc.language.iso
en
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dc.subject
friction
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dc.subject
transition metal diborides
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dc.subject
boron oxide
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dc.subject
solid lubrication
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dc.title
Influence of Mo on the mechanical and tribological properties of DCMS deposited Ti1-xMoxB2+z thin films
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.relation.grantno
PAT1205324
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dc.type.category
Poster Presentation
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tuw.project.title
Unravelling the Solid Self-Lubrication Mechanisms of Boron Oxide on Transition Metal Boride Thin Films
