Electrodischarge synthesis of nanostructured metal-carbon coatings

What priority area of ​​science and technology does it correspond to: new substances and materials.

Research: fundamental.

Future prospect: to be continued as a scientific and technical development.

Research level: no analogues in the world.

Availability of a patent: 2 patents of Ukraine.

What additional actions require further research: financial support for setting up own production facilities or acquiring technology under license terms.

Brief description, advantages, further prospects for application.

A method that allows simultaneously synthesizing and depositing Ti and W carbide phases on a structural surface by means of an electric explosion of metal conductors in an organic gas is formed by the chemical interaction of the explosion and pyrolysis products.

The formation of carbides occurs even under conditions when the energy introduced at the stage of resistive heating of the refractory conductor is not enough to completely transfer it into a gaseous state, and the morphological features of the electric explosion products indicate that the process of carbide formation takes place in the liquid phase. An increase in the energy introduced into Ti i W at the stage of resistive heating, which can be realized either by changing the parameters of the electrical circuit or by exploding conductors insulated with a dielectric varnish, is favorable for the formation of carbides, in particular, stabilized high-temperature phases WC1-x and W2C in the composition coatings, reducing the average particle size and smoothing the surface relief of coatings. Under the same electrical regimes and the same geometry of conductors, the increase in the mass of the coating formed by Ti explosion products is on average 4 times dominated by the increase in the mass of the coating formed by explosion products W, which is explained not only by the difference in the sublimation energy for the mentioned pair of metals, but also by the ratio of the density of pure metals. carbides formed by them.

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