Synthesis of Fine Dispersed Titanium Diboride from Nanofibrous Carbon
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Ceramics International
ISSN: 0272-8842
|
| Вых. Данные |
Год: 2017,
Том: 43,
Номер: 3,
Страницы: 3212-3217
Страниц
: 6
DOI:
10.1016/j.ceramint.2016.11.146
|
| Ключевые слова |
Borides, Carbon nanofibers, Chemical preparation, Chemical properties, Powders, Spectroscopy |
| Авторы |
Krutskii Yu.L.
1
,
Bannov A.G.
1
,
Antonova E.V.
1
,
Sokolov V.V.
2
,
Pichugin A.Yu.
2
,
Maksimovskii E.A.
2,3
,
Krutskaya T.M.
4
,
Netskina O.V.
5
,
Bataev I.A.
1
|
| Организации |
| 1 |
Novosibirsk State Technical University, pr. K. Marksa 20, Novosibirsk 630073, Russia
|
| 2 |
Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. Akademica Lavrent`eva 3, Novosibirsk 630090, Russia
|
| 3 |
Novosibirsk State University, ul. Pirogova, Novosibirsk 630090, Russia
|
| 4 |
Novosibirsk State University of Architekture and Civil Engineering, ul. Leningradskaya 113, Novosibirsk 630008, Russia
|
| 5 |
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, pr. Akademica Lavrent`eva 5, Novosibirsk 630090, Russia
|
|
Информация о финансировании (1)
|
1
|
Министерство образования и науки Российской Федерации
|
10.1151.2014/К
|
This paper presents the experimental data on the synthesis of titanium diboride (TiB2) fine dispersed powder carried out in laboratory scale. TiB2 powder was prepared by the reduction of titanium dioxide with boron carbide and nanofibrous carbon in an argon atmosphere. The powders of TiB2 were characterized by X-ray diffraction (XRD), elemental analyses, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), low-temperature nitrogen adsorption, particle size analysis, simultaneous thermogravimetry and differential scanning calorimetry (TG-DSC). The resulting material contains a single phase – titanium diboride.
The particles of the powder were predominantly aggregated. The average size of the particles and the aggregates were 7.4–8.0 μm with a wide size of distribution. The specific surface values of samples obtained were 2.4–5.8 m2/g. The oxidation of titanium diboride began from the temperature of 450 °C. In this work, the optimal synthesis conditions were estimated: the molar ratio was TiO2:B4C:C=2:1:3 (according to stoichiometry), the temperature was 1600 °C, the process duration was 20–30 min.