The longer stacking sequence results in the α-phase having higher hardness than the β-phase. However, the α-phase is chemically unstable compared with the β-phase. When a liquid phase is present at high temperatures, the α-phase always transforms int...…
Silicon nitride. A cleaner alternative is spark plasma sintering, where heating is conducted rapidly (seconds) by passing pulses of electric current through the compacted powder. Dense silicon nitride compacts have been obtained by this technique at ...…
What is Silicon nitride?Silicon nitride is a chemical compound of the elements silicon and nitrogen. Si3N4 is the most thermodynamically stable and commercially important of the silicon nitrides, and the term "silicon nitride" commonly refers to this...…
What is Silicon powder?Silicon powder, known as micronized silicon, is used for many applications. Metallurgical silicon is typically produced in a size of 0-100 mm, but further size reduction is required for most applications. The optimum particle s...…
Graphite's remarkably diverse properties allow it to be used in many ways. By volume, most of the Graphite mined in the United States is used to line the interior of furnaces or to make crucibles for use in high-temperature foundries since Graphite c...…
The beginnings of the revolutionary froth flotation process are associated with graphite mining. The E&MJ article on the Dixon Crucible Company includes a sketch of the “floating tanks” used in the age-old method of extracting Graphite. Because Graph...…
What is Boron?Boron is rare in the Universe and solar system due to trace formation in the Big Bang and stars. It is formed in minor amounts in cosmic ray spallation nucleosynthesis and may be found uncombined in cosmic dust and meteoroid materials. ...…
CuO could also be a good candidate in solar energy conversion due to many properties: high absorption coefficient, narrow bandgap in the visible region, which is expected to give high conversion efficiency, being nontoxic, stable, good electrical con...…
As mentioned in the section on optical properties, photoluminescence and magnetic properties are the least studied for CuO nanomaterials; however, CuO nanostructures showed interesting and unique magnetic properties, so it is worth summarizing this t...…
Nano/Micron Calcium Hexaboride (CaB6) composite ceramics with different CaB6 nano powder additions were prepared under 1750℃, 32MPa for 5min in a vacuum. Influences of CaB6 nanopowders on morphology and mechanical properties of sintered bodies were i...…
Compared with other properties such as electrical conductivity and field emission, CuO nanostructures' optical properties have been much less investigated and discussed. As a p-type semiconductor, a narrow bandgap of around 1.2 eV was reported for bu...…
Electrostatic stabilization is based on the repulsion between equally charged particles. By considering the combination of van der Waals attractions and electrostatic repulsion Derjaguin, Landau, Verwey, and Overbeek successfully proposed a theory to...…
With the development of the epidemic, the price of semiconductors is likely to rise, and the price of titanium silicide, which is an important material for semiconductor components, will also be affected.…
What's Amorphous Boron Powder? Boron Powder Amorphous Is relatively active, tastes and odorless and stable at room and air temperatures. It can be heated up to 300 degrees, then oxidized and finally burned once it reaches 700. While the flame bec...…
Gallium nitride is an inorganic substance, the chemical formula GaN is a compound of nitrogen and gallium, which is a direct bandgap semiconductor, since 1990, commonly used in light-emitting diodes. This compound is similar in structure to…
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