Usually, the synthetic process of tantalum carbide (TaC) by using tantalum dioxide as tantalum source require high reaction temperature (above 1300 °C). In this study, TaC nanoparticles have been synthesized in large scale through a one-step autoclave route by the reaction of tantalum pentoxide, tin oxalate and metallic lithium at 700 °C. The X-ray powder diffraction pattern reveals the obtained product was cubic TaC with lattice constant of a = 4.439 ¡. Scanning electron microscope images show the obtained TaC product are composed of particles with an average size of about 50 nm. Furthermore, the oxidation resistance of the obtained TaC has been investigated.
Tantalum nitride (Ta 2 N) nanocrystals have been successfully synthesized at 650 °C through a chemical reaction in an autoclave. The X-ray powder diffraction pattern indicates that the product is hexagonal phase Ta 2 N. Transmission electron microscopy image shows that the obtained Ta 2 N product is consist of nanoparticles with an average size of about 50 nm. Furthermore, the thermal gravimetric analyzer (TGA) result indicates that the product has good thermal stability and oxidation resistance below 300 °C in air.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.