Please use this identifier to cite or link to this item:
http://dx.doi.org/10.25673/36549| Title: | Tailored oxidation barrier coatings for Mo-Hf-B and Mo-Zr-B alloys |
| Author(s): | Smokovych, Iryna Bolbut, Volodymyr Krüger, Manja  Scheffler, Michael |
| Issue Date: | 2019 |
| Type: | Article |
| Language: | English |
| URN: | urn:nbn:de:gbv:ma9:1-1981185920-367821 |
| Subjects: | Polymer-derived ceramics Preceramic polymers Perhydropolysilazane Oxidation barrier coatings Mo-Hf-B Mo-Zr-B |
| Abstract: | he cyclic oxidation response of Mo-14Hf-23B and Mo-14.8Zr-26B (compositions in at. %) was investigated in air at 800 ◦C, which is a critical temperature for Mo-based alloys because of the pesting phenomenon. Rapid oxidation was observed for the unprotected samples, and an oxidation protection coating was developed based on a preceramic polymer with silicon and boron as particulate fillers. Cyclic oxidation tests of the coated samples showed excellent oxidation protection: no Mo, Hf or Zr oxides were found after testing and a small mass gain in the initial stage of oxidation indicated the formation of a glassy protection layer on the alloys surfaces after exposure to air at 800 ◦C. |
| URI: | https://opendata.uni-halle.de//handle/1981185920/36782 http://dx.doi.org/10.25673/36549 |
| Open Access: |  Open access publication |
| License: |  (CC BY 4.0) Creative Commons Attribution 4.0 |
| Sponsor/Funder: | DFG-Publikationsfonds 2019 |
| Journal Title: | Materials |
| Publisher: | MDPI |
| Publisher Place: | Basel |
| Volume: | 12 |
| Issue: | 14 |
| Original Publication: | 10.3390/ma12142215 |
| Page Start: | 1 |
| Page End: | 13 |
| Appears in Collections: | Fakultät für Maschinenbau (OA) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Smokovych et al._Tailored_2019.pdf | Zweitveröffentlichung | 4.6 MB | Adobe PDF |  View/Open |