In this research, the fabrication of transparent Alumina was done by spark plasma sintering (SPS). Two types alpha and gamma powders with particle size 200 50 nm were used, respectively. The assisted materials used in research magnesium nitrate lanthanum nitrate, each which 100 ppm using a chemical precipitation process. Calcination performed at 800°C resulting subjected to SPS 1500 °C rate °C/...

The present paper shows the application of a three-dimensional coupled electrical, thermal, mechanical finite element macro-scale modeling framework of Spark Plasma Sintering (SPS) to an actual problem of SPS tooling overheating, encountered during SPS experimentation. The overheating phenomenon is analyzed by varying the geometry of the tooling that exhibits the problem, namely by modeling var...

Spark plasma sintering (SPS) techniques have been intensively investigated for manufacturing of diverse materials. Numerous methods researched to achieve a reduction the time, larger scale production, and significant energy savings. Usually, traditional SPS need prohibitively high outputs fabricate transparent ceramics. Previous studies showed that input power can be significantly decreased whe...

Cu–Al bronzes are interesting metallic materials, demonstrating higher hardness, wear resistance, corrosion resistance and a lower friction coefficient as compared with unalloyed copper. The powder metallurgy approach to the fabrication of these alloys presents opportunities tailor their phase composition grain size. In present work, structural characteristics, properties Cu-10 wt.% Al obtained...

Transparent polycrystalline spinel ceramic was fabricated without any sintering aids by spark plasma sintering method of a mixture of Al2O3 and MgO powders for only 10min soak at 1250°C. Densification, microstructure and optical transparency of spinel were examined. The spinel exhibits an in-line transmission of 55% for a visible-wavelength of 470nm and high hardness value of 2040 HV.

Pure molybdenum powder was sintered using Spark Plasma Sintering under various temperatures, and holding times, under a pressure of 77 MPa and a heating rate at 700°C/min. After sintering, a carbide layer was observed at the surface. The carbide layer thickness, the relative density of the sample as well as the microhardness and the grain size of Mo were measured. The carbide thickness depends ...

Spark plasma sintering (SPS) is widely used for the consolidation of different materials. Copper-based pseudo alloys have found a variety applications including as electrodes in vacuum interrupters high-voltage electric circuits. How does kinetics SPS such depend on heating rate? Do microstructure media to be sintered? These questions were addressed by investigation rate range 0.1 50 K/s. The l...

Spark Plasma Sintering (SPS) is a technology used for fast consolidation of metallic, ceramic, and composite powders. The upscaling this requires reduction in energy consumption homogenization temperature compacts. application Carbon Fiber-Reinforced (CFRC) insulating plates between the sintering setup electrodes frequently considered as measure to attain these goals. However, efficiency such p...

In the area of metal matrix composites, novel reinforcing options are currently being evaluated. Particles amorphous alloys present an interesting possibility to reinforce soft metals. work, interaction between Fe66Cr10Nb5B19 metallic glass and aluminum during spark plasma sintering (SPS) was studied for first time. order trace phase microstructural changes upon sintering, mixtures containing 2...

After a few decades of increasing interest, spark plasma sintering (SPS) has now become mature powder metallurgy technique, which allows assessing its performances toward fabricating enhanced materials. Here, the case metals and alloys will be presented. The main advantage SPS lies in rapid heating capability enabled by application high intensity electric currents to metallic powder. This prese...