Millimeter-Wave Absorption Measurement of Silicon Carbide Powder by Free-Space Method (Part 1) -Investigation of Measuring Method for Powder Sample-

Synthesis of zirconium carbide nanoparticles by sol-gel method and determination of powder characteristics

In this study, zirconium carbide nanoparticles were synthesized by the sol-gel method in the alcoholic system. The sol was prepared in a three-component alkoxide-water-alcohol system based on the chemical sol-gel process under acidic conditions and at pH = 5. Zirconium n-propoxide, furfuryl alcohol were used as raw materials. After the hydrolysis process and formation of the gel, the initial po...

Microwave synthesis of phase-pure, fine silicon carbide powder

Fine, monophasic silicon carbide powder has been synthesized by direct solid-state reaction of its constituents namely silicon and carbon in a 2.45 GHz microwave field. Optimum parameters for the silicon carbide phase formation have been determined by varying reaction time and reaction temperature. The powders have been characterized for their particle size, surface area, phase composition (X-r...

Investigation of the effect of sample volume on the synthesis of B4C / SiC nanocomposite powder by mechanical activation volume combustion synthesis method assisted by spark plasma instrument

In this study, B4C / SiC nanocomposite powder with 1 to 1 molar ratio was synthesized completely in situ, with high purity and at low temperature by mechanical activation volume combustion synthesis method. At first, raw materials consist of B2O3, Mg, C and Si were weighed. The weighed materials were mixed and milled for 9 hours by planetary ball mil and under argon atmosphere. Milled materials...

High-resolution Parallel-beam Powder Diffraction Measurement of Sub-surface Damage in Alumina-silicon Carbide Nanocomposite

The sub-surface damage in ground and subsequently annealed alumina/silicon carbide nanocomposite has been studied by analysis of the x-ray diffraction line width as a function of incidence angle. Bragg peak broadening fell as the depth of penetration of the x-ray beam increased. Despite substantial anisotropy in the uniform compressional strain in the surface of the ground material, no signific...

Method for Improving Consolidation of Powder Resin