Electrical explosion synthesis, oxidation and sintering behavior of Ti-Al intermetallide powders

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Electrical explosion synthesis, oxidation and sintering behavior of Ti-Al intermetallide powders	52 MB	Adobe Acrobat PDF	Read	Download
DOI Доступ к ресурсу на сайте издателя			10.3390/met11050760

Title: Electrical explosion synthesis, oxidation and sintering behavior of Ti-Al intermetallide powders
Creator: Lerner, Marat I.
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Pervikov, Alexander V.
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Glazkova, Elena A.
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Rodkevich, Nikolay G.
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Toropkov, Nikita E.
Date: 2021
DOI: 10.3390/met11050760
Description: In this research, Ti-Al powders were produced by electrical explosion of twisted titanium and aluminum wires. The resulting powders were pressed and sintered in a vacuum to obtain bulk composites. Transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), and X-ray diffraction (XRD) studies were performed to analyze synthesized powders and bulk composites. The studies carried out showed the presence of -Ti, 2-Ti3Al, and -TiAl phases, which are formed by coalescence of Ti and Al clusters formed in the process of non-synchronous electrical explosion of twisted wires. Furthermore, an increase in the energy injected into the wires leads to a decrease in the content of micron particles in the powder. During sintering of pressed Ti-Al powder in the range 800–1250 C, phase transformations occur due to the diffusion of aluminum atoms towards Ti compounds. The research findings can be used to obtain Ti-Al particles and bulk composites with a controllable phase composition.