Acrylamide route for the co-synthesis of tungsten carbide–cobalt nanopowders with additives

Add time:08/31/2019    Source:sciencedirect.com

In this work, cemented tungsten carbide nano-particles were prepared by a chemical method called acrylamide gel. In this process, first, a xerogel containing tungsten and cobalt oxide particles was synthesized. Then, it was carburized by a hydrogen reduction heating process.Acrylamide and N, N-methylene-bis-acrylamide monomers were used as an in-situ carbon. Ammonium meta tungstate (NH4)6H2W12O40·xH2O, and cobalt nitrate Co(NO3)2·6H2O salts were used as the precursor.Both reduction and carburization reactions were carried out simultaneously and the formation of the intermediate phases of W2C, Co3W3C, and Co6W6C led to decrease in the activation barrier.Transactions of reduction and carburization processes were studied by X-ray diffraction analysis at various temperatures. Accordingly, tungsten carbide phase formation was completed at 1100 °C. The formation of W–C and V–C bonds was verified by Raman spectroscopy. SEM images showed the average nano particle size of 50 nm.

We also recommend Trading Suppliers and Manufacturers of TUNGSTEN CARBIDE WITH COBALT BINDER (cas 12774-15-1). Pls Click Website Link as below: cas 12774-15-1 suppliers

Prev:Short communicationSynthesis of monocrystalline tungsten carbide powder in carbon saturated cobalt melt
Next:Full Length ArticleThe influence of carbides on the microstructure, grain growth, and oxidation resistance of nanostructured carbides-strengthened cobalt-based multi-track laser-cladding layers)