The effect of an additive 0.5 wt. % zirconium oxide on the spark plasma sintering (SPS) kinetics alumina powders has been studied. Ceramics were obtained by mixing in a planetary mill with grinding media from stabilized oxide. activation energy SPS was estimated using Young-Cutler model. It shown that density and average grain size ceramics submicron are significantly affected nonequilibrium st...

The (Nb + In) co-doped TiO2 ceramics were synthesized by conventional solid-state sintering (CSSS) and spark plasma sintering (SPS) methods. The phases and microstructures were studied by X-ray diffraction, Raman spectra, field-emission scanning electron microscopy and transmission electron microscopy, indicating that both samples were in pure rutile phase while showing significant difference i...

V-VI thermoelectric compounds like Bi2Te3-based alloys are well known for room temperature applications like Peltier coolers or thermogenerators. Their anisotropic physical properties and mechanical weakness are a problem for the manufacturing. To overcome the mechanical problem Spark Plasma Sintering (SPS) was used. 2 inch Wafers of polycrystalline bismuth telluride based n-type and p-type the...

Commercial zirconium carbide (ZrC) powder is consolidated by Spark Plasma Sintering (SPS). Processing temperatures range from 1650 to 2100 °C. Specimens with various density levels are obtained when performing single-die SPS at different temperatures. Besides the single-die tooling setup, a double-die tooling setup is employed to largely increase the actual applied pressure to achieve higher de...

Based on precursor powders with a size of 200-300 nm prepared by the low-temperature solid reaction method, phase-pure YFeO₃ ceramics are fabricated using spark plasma sintering (SPS) at different temperatures. X-ray diffraction (XRD) and scanning electron microscopy (SEM) reveal that the high-purity YFeO₃ ceramics can be prepared using SPS, while the results from X-ray photoelectron spectrosco...

Self-lubricating composites are designed to obtain materials that reduce energy consumption, improve heat dissipation between moving bodies, and eliminate the need for external lubricants. The use of a solid lubricant in bulk composite material always involves a significant reduction in its mechanical properties, which is usually not an optimal solution. The growing interest in multilayer graph...

Two processes to sinter monolithic hexagonal Barium AluminoSilicate (BAS) are compared in this study: Spark Plasma Sintering (SPS) and a new Ultra-Fast Pressureless (UFPS) technology developed by Galtenco Solutions®. For both, BAS was sintered its thermal stability range (between 1590 °C 1760 °C). Results demonstrate that it is only possible manufacture small parts (15 mm diameter/ 5 height) of...

We investigated the effect of very high pressure on sintering temperature, phase transition and grain growth during Spark Plasma Sintering (SPS) a 15 nm TiO2 nanopowder. Using in situ synchrotron X-ray diffraction at 1.5 3.5 GPa, we followed evolution crystalline phases crystallite size as function temperature. In comparison, laboratory, SPS experiments were performed two original facilities: A...

The purpose of this experimental work was to determine the regeneration ability bone tissue due modern bioceramics synthesized and obtained using previously developed method reactive spark plasma sintering (Spark Plasma Sintering-Reactive Synthesis, SPS-RS). study performed on 26 laboratory rabbits - females New Zealand White breed, divided into two groups. evaluation burr hole after covering d...