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Thursday, 28 November 2024

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PRODUCTION TECHNOLOGY OF ULTRADISPERSED AND NANOMETRIC POWDERS(31/37)

PRODUCTION TECHNOLOGY OF ULTRADISPERSED AND NANOMETRIC POWDERS

The physical processes of evaporation and vapor condensation constitute a unique technological complex that gives unlimited possibilities to create solid body structures. Therefore within the current STCU project #GE-111 of the Georgian Technical University, an electron beam technology for production of powders will be created. The technology will not require any preliminary treatment of the starting materials. Focused electron beams enable the evaporation of most refractory elements and chemical compounds and these give free choice of starting materials. Application of water-cooled copper crucibles and carrying out the process under vacuum ensures high purity of vapor stream. Vacuum technology enables to charge powders into special containers, and to pressurize them under vacuum in one technological cycle. Powders of some metals, e.g. nickel and cobalt do not require additional measures of passivation and pressurization.
The developed nanoscale powders have commercial potential in micro and nanoelectronics, medicine, nuclear power generation, space technology, machine-building industry.

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