Development Of Novel Chemical Synthetic Routes For Nanocrystalline VN, Mo2N, And W2N Nitride Materials.

Autor: Mishra, Pragnya Paramita, Panda, Rabi Narayan
Předmět:
Zdroj: AIP Conference Proceedings; 2015, p1-3, 3p, 1 Black and White Photograph, 4 Charts, 1 Graph
Abstrakt: In this study, novel synthetic routes for the synthesis of VN, Mo2N and W2N binary nitrides have been presented. We have synthesized new precursors, i.e.V2O5 from citric acid based sol-gel method and Mo, W based ethylenediamine complex which are used for the nitridation experiments using solid urea (NH2CONH2) or ammonia (NH3(g)). We have successfully prepared phase pure nano-dimensional nitride materials. The estimated crystallite sizes and SEM particle sizes were found in the range of 4-16 nm and 111-870 nm, respectively. VN, Mo2N and W2N nitrides crystallize in fcc-cubic structures with the values of lattice parameters; 4.128, 4.165 and 4.175 Å for urea route and 4.112, 4.196 and 4.150 Å for ammonia route, respectively. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index