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This paper is devoted to the studying of the dynamical changes in the density of aluminium microparticles (MPs) on the substrate surface made of stainless steel, immersed in vacuum arc plasma, at high-frequency short-pulse negative bias potential. It is shown experimentally that the density of aluminium MPs on the substrate surface is decreased dynamically by 3 orders when the treatment time is increased from 15 s to 3 min at the bias potential –2 kV. A possibility of the application of MPs unfiltered vacuum arc plasma for high-frequency short-pulse plasma immersion ion implantation to form the intermetallic layers is discussed.

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