Structural, mechanical and oxidation characteristics of siliconized Ti-Al-X (X = Nb, Ta) alloys

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F14%3A43898093" target="_blank" >RIV/60461373:22310/14:43898093 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.apsusc.2014.04.076" target="_blank" >http://dx.doi.org/10.1016/j.apsusc.2014.04.076</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apsusc.2014.04.076" target="_blank" >10.1016/j.apsusc.2014.04.076</a>

Result language
angličtina
Original language name
Structural, mechanical and oxidation characteristics of siliconized Ti-Al-X (X = Nb, Ta) alloys
Original language description
In this work, Ti-46.6A1, Ti-45.2A1-7.2Nb and Ti-44.8A1-6.6Ta alloys were siliconized by being buried in Si powder followed by heating (900, 1000 and 1100 C for 2-12 h). Observation of the silicide formation kinetics showed that at 900 C, the layers growlinearly with time. Meanwhile, at 1000 and 1100 C, the growth is suppressed after the first two hours of siliconizing. Structure and composition observations revealed that, regardless of the composition of the substrate, the silicide layers formed at 900and 1000 C are composed of sublayers of TiSi2 and TiSi, elongated-shape TiSi crystals and a titanium-depleted sublayer at the silicide/metal interface. The layer formed at 1100 C is Ti5Si3 with an external layer of Al203. The obtained silicide layers possessed very high hardness and improved oxidation resistance. This effect was significantly more pronounced in the case of the ternary alloys. (C) 2014 Elsevier B.V. All rights reserved.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JG - Metallurgy, metal materials
OECD FORD branch
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Project
<a href="/en/project/GBP108%2F12%2FG043" target="_blank" >GBP108/12/G043: Interface controlled properties of micro/nanocrystalline materials for advanced structural applications, biodegradable implants and hydrogen storage</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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