The Study of the Synthesis of Nanosized Refractory Carbides by Carbothermal Reduction of Precursor Gels and their Characteristics

Materials Science = Medžiagotyra 2016
Ilmārs Zālīte, Anita Letlena, Laila Čera, Ints Šteins, Aija Krūmiņa

In the present study, four refractory carbides - TiC, NbC, TaC and SiC - have been produced by carbothermal reduction of a precursor prepared by sol-gel and coat-mix (SiC) process. Binary hydrogels, in which the oxide gel and a pyrolysable organic compound are combined, were prepared as precursors for synthesis of corresponding carbides. The phase structure, crystallite size, morphology and specific surface area of the synthesized powders are investigated by XRD, SEM and BET respectively. Spark plasma sintering (SPS) method (up to 1850 °C, heating rate of 100 °C/min and dwelling time of 5 min.) was used for investigation of compacting of these carbides.

Keywords
transition metal carbide, SiC, nanosized powders, synthesis, SPS sintering, properties
DOI
10.5755/j01.ms.22.1.7473
Hyperlink
http://www.matsc.ktu.lt/index.php/MatSc/article/view/7473

Zālīte, I., Letlena, A., Čera, L., Šteins, I., Krūmiņa, A. The Study of the Synthesis of Nanosized Refractory Carbides by Carbothermal Reduction of Precursor Gels and their Characteristics. Materials Science = Medžiagotyra, 2016, Vol.22, Iss.1, pp.70-73. ISSN 1392-1320. e-ISSN 2029-7289. Available from: doi:10.5755/j01.ms.22.1.7473

Publication language
English (en)