Formation of Nb3Al Intermetallic Compound by Spark Plasma Sintering.

Optically transparent ceramics by spark plasma sintering of oxide nanoparticles

Formation of Strontium Titanate Bicrystal by the Spark Plasma Sintering Method

Spark plasma sintering (SPS) is a technique used for enhanced consolidation of powdered compacts by utilization of pulsed direct current and high uniaxial pressure. Physical mechanisms for densification of these powders as well as subsequent grain growth anomalies are debated in literature [1]. Limited information is available regarding the influence of electric fields on grain boundary formati...

Fabrication of Nanostructured Cu matrix Nanocomposites by High Energy Mechanical Milling and Spark Plasma Sintering

Spark plasma sintering (SPS) is a sintering process that is capable of sintering hard worked powders in short times. This technique was used to fabricate bulk Cu and Cu-SiC nanocomposites. Pure Cu and mixed powders of Cu including 4 vol% of SiC nanoparticles were mechanically alloyed for 25 h and sintered at 750˚C under vacuum condition by SPS method. Microstructures of the materials were chara...

ZrB2-CNTs Nanocomposites Fabricated by Spark Plasma Sintering

ZrB₂-based nanocomposites with and without carbon nanotubes (CNTs) as reinforcement were prepared at 1600 °C by spark plasma sintering. The effects of CNTs on the microstructure and mechanical properties of nano-ZrB₂ matrix composites were studied. The results indicated that adding CNTs can inhibit the abnormal grain growth of ZrB₂ grains and improve the fracture toughness of the composites. Th...

In-situ Fabrication of Transparent Magnesium Aluminate Spinel by Spark Plasma Sintering

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.