X-ray emission and photoelectron spectroscopy studies of interaction of nanocrystalline TiN and TiB₂ after highpressure sintering
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
X-ray emission and photoelectron spectroscopy studies of interaction of nanocrystalline TiN and TiB₂ after highpressure sintering
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| Creator |
Bykov, A.I.
Timofeeva, I.I. Kovalev, A.V. Isayeva, L.P. Ragulya, A.V. Zaulychny, Ya.V. Khyzhun, O.Yu. |
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| Description |
A few samples of nanocrystalline TiN–TiB₂ ceramics were synthesized by high-pressure (3.0 GPa) and high-temperature (t = 1300–1500°C) sintering a mixture of TiN and TiB₂ nanopowders (80 wt.% TiN and 20 wt.% TiB₂) and the microhardness of the samples was determined. Peculiarities of the chemical bonding of the TiN–TiB₂ ceramics possessing the highest microhardness among the samples under consideration, mainly 29.65 ± 0.90 GPa, were studied in the present work using the X-ray emission and photoelectron spectroscopy methods. The X-ray emission spectra reflecting the energy distribution of the valence electronic states of the constituents (the N Kα (N 2p-like states), B Kα (В 2p-like states), Ti Lα (valence Ti s,d-like states) and Ti Kβ₅ (Ti 4p-like states) bands) were measured for the mentioned ceramics and for the initial mixture of TiN and TiB₂ nanopowders. For the above substances the X-ray photoelectron core-level binding energies were evaluated as well. It has been established that, when synthesizing the nanocrystalline TiN–TiB₂ ceramics from the initial mixture of TiN and TiB₂ nanopowders, the half-widths of the X-ray emission Ti Lα and Ti Kβ₅ bands decrease by (0.5–0.6) ± 0.2 eV.
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| Date |
2014-11-02T08:08:18Z
2014-11-02T08:08:18Z 2007 |
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| Type |
Article
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| Identifier |
X-ray emission and photoelectron spectroscopy studies of interaction of nanocrystalline TiN and TiB₂ after highpressure sintering / A.I. Bykov, I.I. Timofeeva, A.V. Kovalev, L.P. Isayeva, A.V. Ragulya, Ya.V. Zaulychny, O.Yu. Khyzhun // Физика и техника высоких давлений. — 2007. — Т. 17, № 1. — С. 32-41. — Бібліогр.: 25 назв. — англ.
0868-5924 PACS: 78.70.Dm, 78.70.En, 79.60.−i, 82.80.Ej, 82.80.Pv http://dspace.nbuv.gov.ua/handle/123456789/70287 |
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| Language |
en
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| Relation |
Физика и техника высоких давлений
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| Publisher |
Донецький фізико-технічний інститут ім. О.О. Галкіна НАН України
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