A need to deeper understand the influence of electric current on the structure and properties of metallic materials consolidated by Spark Plasma Sintering (SPS) stimulates research on inter-particle interactions, bonding and necking processes in low-pressure or pressureless conditions as favoring technique-specific local effects when electric current passes through the underdeveloped inter-part...

The microstructure, phase composition, and microhardness of both gas-atomized and mechanically milled powders of the Al7075 + 1 wt % Zr alloy were investigated. The gas-atomized powder exhibited a cellular microstructure (grain size of a few µm) with layers of intermetallic phases along the cell boundaries. Mechanical milling (400 revolutions per minute (RPM)/8 h) resulted in a grain size reduc...

Functionally graded materials (FGM) present enormous potential to combine with distinct mechanical and thermal properties in a component via compositional gradient throughout the body. In work, step Al2O3/NbC composites were assessed order obtain FGM high hardness good fracture toughness. Step uniaxially pressed cylinders consolidated by Spark plasma sintering (SPS) into fully dense (>99% TD) c...

Present work focusses on the fabrication of Al-10% SiC-4% Kaoline HMMC by using conventional sintering, Microwave- assisted sintering (MAS) and Spark Plasma Sintering (SPS) techniques. Tensile, Compression hardness tests were performed as per ASTM standards to study effect mechanisms fabricated specimens. Results reveal that an enhancement 13.3% in U.T.S 11.7% strength was observed Sintered whe...

A PM approach is investigated in the context of extremely fine low temperature bainitic steels with a reasonable combination of ultimate tensile strength and uniform elongation. The strategy consists of three steps. First, ball milling is used for mechanical alloying and to create a large density of interfaces prior to sintering. In the second step, spark plasma sintering is used as a rapid con...

This study investigates the impact of carbon on kinetics spark plasma sintering (SPS) nano- and submicron powders WC-10 wt.%Co. Carbon, in form graphite, was introduced into by mixing. The activation energy solid-phase determined for conditions isothermal continuous heating. It has been demonstrated that increasing content leads to a decrease fraction ?-phase particles shift shrinkage curve tow...

Functionally graded materials (FGM) in the form of layered structure consisting of yttria stabilized zirconia (8 mol% Y2O3) and nickel were fabricated by spark plasma sintering procedure. The relative density, linear shrinkage and Vickers hardness of each layer of graded materials were measured. The microstructure and the composition of these components were studied. The results obtained show t...

• ZrB2-SiC ceramics were joined using Ni foil filler and spark plasma sintering. Joining mechanisms of identified. Mechanical tests performed to evaluate the mechanical properties fabricated joints. Oxidation behaviour joint was characterised analysed over a wide range temperature. is crucial for ultra-high temperature (UHTCs) be used in demanding environments due difficulty manufacturing large...

Starting Bi2Te3 and Ni powders were spark-plasma-sintered (SPS) to prepare thermoelectric cermet composites consisting of matrix with different content, x, ferromagnetic filler (x = 0.00, 0.50, 0.85, 1.25 1.50 at. %). Grained is texturing under sintering. Texturing degree x-dependent that attributed ability particles act as lubricant. New trigonal NiTe2 phase formed SPS-process. The phases corr...