Kinetics of the Surface Oxidation of Diamond Nanopowder, Modified with Tungsten by Chemical Adsorption from a Solution

The oxidation kinetics of the ACM5 0.1/0 statically synthesized diamond nanopowder in the presence of tungsten in the amounts of 1 and 5 wt %, introduced into the sample by wetting it with the (NH 4 ) 2 WO 4 water solution was investigated. It is established that at the chemical modification of a di...

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Bibliographic Details
Published in:Journal of superhard materials 2018-03, Vol.40 (2), p.82-87
Main Authors: Zabuga, V. Ya, Tsapyuk, G. G., Kurylyak, T. O., Bochechka, O. O.
Format: Article
Language:English
Subjects:
Adsorption
Chemistry
Chemistry and Materials Science
Diamonds
Kinetics
Oxidation
Physical Chemistry
Production
Properties
Reaction kinetics
Structure
Tungsten
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Summary:The oxidation kinetics of the ACM5 0.1/0 statically synthesized diamond nanopowder in the presence of tungsten in the amounts of 1 and 5 wt %, introduced into the sample by wetting it with the (NH 4 ) 2 WO 4 water solution was investigated. It is established that at the chemical modification of a diamond nanopowder with tungsten by adsorption from a solution the inhibitory action of tungsten on the kinetics of the diamond oxidation also shows. This agrees with the suggested kinetic scheme of the reaction, which contains the stage of the diamond interaction with the gaseous tungsten oxide.
ISSN:1063-4576
1934-9408
DOI:10.3103/S1063457618020028