SHOCK-WAVE COMPACTING OF POWDERS

Materials based on MAX phases have a unique combination of properties. They combine the best properties of metals and ceramics. Such a set of useful operational parameters allows for wide technical application in various industries. However, despite the large number of research works carried out in this area, obtaining a dense, uniform MAX material remains an unresolved issue. The possibilities of the pulsed compacting method with blasting explosives for obtaining products from MAX phase powders were investigated. As a model material for the research, powders of MAX phases based on Ti₂AlC and Ti₃AlC₂ synthesized by free sintering in vacuum were used. It was shown that double pulse compacting powders based Ti₂AlC Ti₃AlC₂ and reducing compacts porosity from 22 % to 9 %, is practically unchanged while the phase composition of the material. Test samples obtained by pulsed compaction in oxidation resistance showed that the method of the shock-wave loading applicable for competitive materials realizing potential properties of MAX phases. It is noted that to increase the heat resistance it is necessary to minimize the porosity of the material. Significant reduction in porosity can be achieved due to repeated shock-wave loading of the material.

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