Studies on the thermal stability of nanosized powder of WC1-x-based product prepared by plasma dynamic method, compaction feasibility of the powder and preparation of composite with aluminium; Ceramics International; Vol. 47, iss. 5

Studies on the thermal stability of nanosized powder of WC1-x-based product prepared by plasma dynamic method, compaction feasibility of the powder and preparation of composite with aluminium; Ceramics International; Vol. 47, iss. 5

書目詳細資料
Parent link:Ceramics International
Vol. 47, iss. 5.— 2021.— [P. 6884-6895]
企業作者: Национальный исследовательский Томский политехнический университет Инженерная школа энергетики Отделение электроэнергетики и электротехники
其他作者: Shanenkov I. I. Ivan Igorevich, Nikitin D. S. Dmitry Sergeevich, Ivashutenko A. S. Alexander Sergeevich, Shanenkova Yu. L. Yuliya Leonidovna, Vympina Yu. N. Yuliya Nikolaevna, Butenko D. A. Denis Alekseevich, Khan Vey, Sivkov A. A. Aleksandr Anatolyevich
總結:Title screen
Obtaining ceramics and composites based on cubic tungsten carbide WC1-x requires knowledge of its thermal behavior, which is poorly studied now. The paper presents the results of a thermal analysis of the nanosized WC1-x-based product with the stoichiometry of WC0.72-0.74 synthesized by a plasma dynamic method. Taking into account the known literature data on the structure of WC1-x products, an investigation of synthesized nanoparticles allows us to conclude that WC1-x cannot exist without a crystalline graphite shell and/or an amorphous carbon matrix. Similarly, the destruction of both carbon shells and a matrix leads to either quick oxidation of WC1-x to WO3 when heated in air or the phase transition WC1-x ? WC when heated in vacuum. The thermal analysis shows WC1-x is stable up to 550 °C in air and up to 1200 °C in vacuum and argon. The obtained data made it possible to formulate recommendations for preserving WC1-x material in bulk specimens when compacting from the dispersed powder. The preparation of binderless ceramics from the WC1-x-based product by the SPS method seems to be impossible due to carbon diffusion during the sintering process, while the use of WC1-x-based products as a reinforcing additive to a metal (Al) matrix seems to be the only way to preserve this crystalline phase in a bulk form at the present time.
Режим доступа: по договору с организацией-держателем ресурса
語言:英语
出版: 2021
主題:
электронный ресурс
труды учёных ТПУ
cubic tungsten carbide
nanocomposites
thermal properties
spark plasma sintering
карбид вольфрама
нанокомпозиты
тепловые свойства
плазменное спекание
在線閱讀:https://doi.org/10.1016/j.ceramint.2020.11.035
格式: 電子 Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663403

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