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Functional materials modification and synthesis by high-concentrated energy flows

Work number - M 43 FILED

Presented by NASU Institute of Pulse Processes and Technologies

Authors: PhD Zaichenko A.D., PhD Prystash M.S., PhD Lypian Ye.V., PhD Torpakov A.S.

The goal of present work is the development of physical and technical basis for the creation of methods of modification and synthesis of functional materials by means of high voltage electric discharge treatment and spark plasma sintering.

Basing on theoretical and experimental studies, authors have found the regularities of structure and phase formation of particles of powder compositions during their high voltage electric discharge synthesis, as well as of consolidated materials in conditions of their spark plasma sintering. The connection between treatment parameters and functional and physical and mechanical properties and materials, consolidated from them, is found. The technological methods for creation of metal matrix composites, based on Ferrum, Titanium and Aluminum, with high values of hardness, strength and resistance to abrasive wear, are developed. The method for modification of the structure of heat resistance alloys, using powders, obtained by electric discharge preparation, is proposed.

If compared to known analogs in the world, developed methods have no direct analogs in part of treatment with high voltage electric discharge in liquid; and if compared to conventional powder metallurgy methods, it allows obtainment of materials with increased physical, mechanical and performance characteristics, as well as with lower self-cost.

Developed materials and technological processes have undergone experimental industrial testing at foreign and domestic companies: EPoS s.r.l.(Italy), SE SPCG “Zorya” – “Mashproekt” SC “Ukroboronprom”, “Kristal” Plant” Ltd, SE “Experimental production of IPPT NASU”. Obtained scientific and practical results are used during education of specialists at “Materials science and metal technologies” and “Pulse processes and technologies” academic departments of Admiral Makarov National University of Shipbuilding. Scientific papers, included in present series, are recommended for students as additional material.

Created materials can be used as a substitution for imported heat resistant alloys and instrumental materials, as they ensure increase of physical and mechanical characteristics of parts, that work in conditions of increased temperatures and abrasive wear, as well as they will provide the decrease of parts self-cost (to 50 %).

Number of publications: 108, including 43 articles (17 – in foreign editions). According to the Scopus database, the total number of references to authors' publications, presented in the work, is 11, h-index (of work) = 2; according to the Google Scholar database, the total number of links is 30, h-index (of work) = 3. Novelty and competitiveness of technical solutions is protected by 6 patents of Ukraine for invention and 8 – for utility model. 4 candidate of sciences (PhD) dissertations are defended on this subject.