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Muñoz-Saldaña, J. and Valencia-Ramirez, A. and Castillo-Perea, L.A. and Díaz-De la Torre, S. and Caceres-Diaz, L.A. and Alvarado Orozco, J.M. and Giraldo Betancur, A.L. and Schulz, Uwe (2021) Oxidation behavior of dense Yttrium doped B2-NiAl bulk material fabricated by ball milling self-propagating high-temperature synthesis and densified by spark plasma sintering. Surface and Coatings Technology, 421, p. 127448. Elsevier. doi: 10.1016/j.surfcoat.2021.127448. ISSN 0257-8972.
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Official URL: http://dx.doi.org/10.1016/j.surfcoat.2021.127448
Abstract
The effect of Y additions on the oxidation behavior in furnace cyclic tests and its correlation with thermogravimetric analysis of sintered NiAl alloys is here reported. Part of the samples got an EB-PVD 7YSZ coating on top. Highly ordered B2-NiAl intermetallic powder was obtained by self-propagating high-temperature synthesis (SHS) during ball milling of elemental precursors with Y additions in amounts between 0 and 1.5 at.%. The SHS process was optimized to identify the combination of milling parameters that leads to a sharp increase in the reaction temperature for intermetallic synthesis. The tested samples consisted of NiAlY buttons densified by spark plasma sintering (SPS). Furnace cyclic testing of the SPSbuttons at 1100 °C showed high resistance to spallation of the 7YSZ top-coat and a significant decrease in its oxide growth kinetics attributed to Y-additions. Contents below 0.5 at.% Y reduce the oxidation kinetics of NiAl exposed to thermal cycles at 1100 oC, while higher Y contents are favorable for a longer TBC life
| Item URL in elib: | https://elib.dlr.de/144914/ | ||||||||||||||||||||||||||||||||||||
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| Document Type: | Article | ||||||||||||||||||||||||||||||||||||
| Title: | Oxidation behavior of dense Yttrium doped B2-NiAl bulk material fabricated by ball milling self-propagating high-temperature synthesis and densified by spark plasma sintering | ||||||||||||||||||||||||||||||||||||
| Authors: |
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| Date: | 25 June 2021 | ||||||||||||||||||||||||||||||||||||
| Journal or Publication Title: | Surface and Coatings Technology | ||||||||||||||||||||||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||||||||||||||||||||||
| Open Access: | Yes | ||||||||||||||||||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||||||||||||||||||
| In SCOPUS: | Yes | ||||||||||||||||||||||||||||||||||||
| In ISI Web of Science: | Yes | ||||||||||||||||||||||||||||||||||||
| Volume: | 421 | ||||||||||||||||||||||||||||||||||||
| DOI: | 10.1016/j.surfcoat.2021.127448 | ||||||||||||||||||||||||||||||||||||
| Page Range: | p. 127448 | ||||||||||||||||||||||||||||||||||||
| Publisher: | Elsevier | ||||||||||||||||||||||||||||||||||||
| ISSN: | 0257-8972 | ||||||||||||||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||||||||||||||
| Keywords: | EB-PVD, NiAl, lifetime, thermal barrier coating | ||||||||||||||||||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||||||||||||||
| HGF - Program: | Aeronautics | ||||||||||||||||||||||||||||||||||||
| HGF - Program Themes: | Clean Propulsion | ||||||||||||||||||||||||||||||||||||
| DLR - Research area: | Aeronautics | ||||||||||||||||||||||||||||||||||||
| DLR - Program: | L CP - Clean Propulsion | ||||||||||||||||||||||||||||||||||||
| DLR - Research theme (Project): | L - Advanced Materials and New Manufacturing Technologies | ||||||||||||||||||||||||||||||||||||
| Location: | Köln-Porz | ||||||||||||||||||||||||||||||||||||
| Institutes and Institutions: | Institute of Materials Research > High Temperature and Functional Coatings | ||||||||||||||||||||||||||||||||||||
| Deposited By: | Schulz, Prof. Dr Uwe | ||||||||||||||||||||||||||||||||||||
| Deposited On: | 09 Nov 2021 09:07 | ||||||||||||||||||||||||||||||||||||
| Last Modified: | 12 Oct 2023 03:00 |
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