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Nitriding study of ...
Nitriding study of titanium silicide intermetallics obtained by mechanical alloying
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- Cordoba Gallego, Jose Manuel, 2000- (author)
- Instituto de Ciencia de Materiales de Sevilla
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- Alcalá, M.D. (author)
- Instituto de Ciencia de Materiales de Sevilla
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- Sayagués, M.J. (author)
- Instituto de Ciencia de Materiales de Sevilla
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- Avilés, M.A. (author)
- Instituto de Ciencia de Materiales de Sevilla
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- Real, C. (author)
- Instituto de Ciencia de Materiales de Sevilla
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- Gotor, F.J. (author)
- Instituto de Ciencia de Materiales de Sevilla
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(creator_code:org_t)
- Elsevier BV, 2008
- 2008
- English.
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In: Intermetallics (Barking). - : Elsevier BV. - 0966-9795 .- 1879-0216. ; 16:8, s. 948-954
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Titanium and silicon powder blends were ball-milled under an inert atmosphere and subsequently annealed in a nitrogen atmosphere. Ti62.5Si37.5, Ti55.6Si44.4, and Ti50Si50 mixtures suffered a mechanically induced self-propagating reaction during milling. The products of the combustion were Ti5Si3 for the Ti62.5Si37.5 mixture and a combination of intermetallic phases for the Ti55.6Si44.4 and Ti50Si50 mixtures. The Ti33.3Si66.7 blend did not show an MSR process, but prolonged milling allowed the formation of a mixture of stable C54-TiSi2 and metastable C49-TiSi2 by a diffusion reaction. The nitriding study showed a different behaviour for C54-TiSi2 and Ti5Si3. C54-TiSi2 nitriding took place in a two-step process: the first corresponded to the formation of TiN and Si and the second to the silicon nitriding leading to the formation of a- and b-Si3N4. However, silicon and titanium nitriding primarily occurred simultaneously during the annealing of Ti5Si3, and the final product was a mixture of TiN and a-Si3N4.
Keyword
- NATURAL SCIENCES
- NATURVETENSKAP
Publication and Content Type
- ref (subject category)
- art (subject category)
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