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Ti3SiC2 MAX-phase formation during wave combustion with the use of carbon nanotubesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июня 2025 г.
- Авторы: Larionova N.S., Nikonova R.M., Lady’anov V.I.
- Журнал: Ceramics International
- Том: 51
- Номер: 16 Part A
- Год издания: 2025
- Издательство: Pergamon Press Ltd.
- Местоположение издательства: United Kingdom
- Первая страница: 21287
- Последняя страница: 21296
- DOI: 10.1016/j.ceramint.2025.02.291
- Аннотация: The method of self-propagating high-temperature synthesis conducted in the mode of wave combustion in theflow of argon medium was used for obtaining composites based on 3Ti-1.24Si-2C where multi-walled carbonnanotubes (MWCNTs) and carbon black were used as a source of carbon. The comparative studies of the phasecomposition and structure of the composites were performed by X-ray diffraction analysis, scanning electronmicroscopy and Raman spectroscopy. It was found that in the compared systems, there were differences in thecharacter and mechanism of the proceeding of exothermic reactions. The use of MWCNTs led to a considerabledecrease in the combustion temperature to 1240–1510 ◦C compared with the case when carbon black was used(2040 ◦C). The observed change in the kinetics (rate) of transformations that was due to high thermal conductionof MWCNT and, correspondingly, losses of heat during the synthesis. When carbon black was used, compositeTi3SiC2/TiC was formed and the use of MWCNTs led to the formation of Ti3SiC2/TiC/Ti5Si3Cx/C; the content ofthe MAX-phase was 94 and 13 wt%, respectively. In the latter case, the increase in the content of Ti3SiC2 to 87 wt% was achieved by the additional heating of the composite to ~1350 ◦C. At this temperature, a liquid phase Ti-Siwas formed, which was promoted the acceleration of the reaction of the MAX-phase Ti3SiC2 formation from TiCxand Ti5Si3Cx. The content of carbide TiCx was decreased to 13 wt% while the intermediate phases Ti5Si3Cx and Cwere absent in the sample after heating.
- Добавил в систему: Никонова Роза Музафаровна