<div class="csl-bib-body">
<div class="csl-entry">Glechner, T., Hahn, R., Bahr, A. A. I., Wojcik, T., Weiss, M., Ramm, J., Polcik, P., & Riedl-Tragenreif, H. (2022, September 14). <i>Influence of Si on the oxidation behavior of TM-Si-B2±z coatings (TM = Ti, Cr, Hf, Ta, W)</i> [Conference Presentation]. 18th International Conference on Plasma Surface Engineering (PSE 2022), Erfurt, Germany. http://hdl.handle.net/20.500.12708/152922</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/152922
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dc.description.abstract
Surface protection of highly stressed components used in aviation or energy production is of great interest, especially extending the operation ranges in oxidative high-temperature environments. Here, transition metal (TM) ceramics are a suitable class to resist such conditions.
Combining a high temperature stable ceramic, such as transition metal diborides, with the excellent oxide former Si was proven to result in coatings with outstanding oxidation resistance, tested up to 1500 °C. Various TM-Si-B2±z (TM=Ti, Cr, Hf, Ta, W) films were sputter deposited and subsequently oxidized in a DTA/TG setup to study the oxidation kinetics. Above certain Si contents Ti-Si-B2±z, Cr-Si-B2±z, and
Hf-Si-B2±z exhibit strongly retarded oxidation kinetics with kp values being below 10-11 kg2m-4s-1 at 1100 °C. Long term oxidation tests at 1200 °C (up to 60 h in ambient air on hard substrates) confirmed the protective ability of such coatings, i.e. with Hf0.20Si0.23B0.57 exhibiting an oxide scale thickness of only 1.5 µm after 60 h. Along with a broad set of high-resolution characterization techniques the study introduces this new class of hard coatings for oxidation protection at ultra-high temperatures.
en
dc.description.sponsorship
CDG Christian Doppler Forschungsgesellschaft
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dc.language.iso
en
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dc.subject
Oxidation Resistance
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dc.subject
Transition Metal Ceramics
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dc.subject
Thin Films
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dc.subject
Borides
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dc.subject
UHTC
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dc.title
Influence of Si on the oxidation behavior of TM-Si-B2±z coatings (TM = Ti, Cr, Hf, Ta, W)
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.contributor.affiliation
Oerlikon (Liechtenstein), Liechtenstein
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dc.contributor.affiliation
Plansee (Germany), Germany
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dc.relation.grantno
CDL-SEC
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dc.type.category
Conference Presentation
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tuw.project.title
Oberflächentechnik von hochbeanspruchten Präzisionskomponenten
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tuw.researchinfrastructure
Röntgenzentrum
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tuw.researchinfrastructure
Universitäre Service-Einrichtung für Transmissionselektronenmikroskopie