Titelangaben
Beck, Katharina ; Hinrichs, Frauke ; Oskay, Ceyhun ; Ulrich, Anke Silvia ; Heilmaier, Martin ; Galetz, Mathias C.:
Chromium Diffusion Coatings for Mo-Based Silicides to Improve Their Oxidation Resistance.
In: Coatings.
Bd. 13
(2023)
Heft 10
.
- 1712.
ISSN 2079-6412
DOI: https://doi.org/10.3390/coatings13101712
Abstract
The oxidation behavior of two ternary Mo-Si-Ti alloys (eutectic Mo-20.0Si-52.8Ti and eutectoid Mo-21.0Si-34.0Ti) was investigated using thermogravimetric analysis at 700 °C, 900 °C, and 1300 °C for 100 h. The eutectic alloy formed a protective SiO2/TiO2 oxide scale, whereas the eutectoid alloy showed catastrophic oxidation. To improve the oxidation behavior of these alloys, chromium diffusion coatings deposited via pack cementation on the surface were investigated. Cr coatings were found to be suitable for improving oxidation resistance at 700 °C and 900 °C but failed at 1300 °C due to the evaporation of thin scales. At 700 °C and 900 °C, the formation of a Cr2O3 scale was proven on the Ti-rich/Mo-lean eutectic composition. After exposure, the Ti-lean/Mo-rich eutectoid composition, which is intrinsically more prone to oxidation, was found to form a continuous Cr2O3 scale only at 700 °C.
Weitere Angaben
Publikationsform: | Artikel in einer Zeitschrift |
---|---|
Begutachteter Beitrag: | Ja |
Keywords: | chromium coating; high-temperature applications; oxidation resistance; pack cementation; silicides |
Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Metallische Werkstoffe > Lehrstuhl Metallische Werkstoffe - Univ.-Prof. Dr.-Ing. Uwe Glatzel Profilfelder > Advanced Fields Profilfelder > Advanced Fields > Neue Materialien Forschungseinrichtungen Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen > Bayreuther Materialzentrum - BayMAT |
Titel an der UBT entstanden: | Ja |
Themengebiete aus DDC: | 000 Informatik,Informationswissenschaft, allgemeine Werke 600 Technik, Medizin, angewandte Wissenschaften 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
Eingestellt am: | 16 Okt 2023 08:02 |
Letzte Änderung: | 16 Okt 2023 08:02 |
URI: | https://eref.uni-bayreuth.de/id/eprint/87211 |