Advanced Nano Material

  Overview of Gallium Nitride GaN products Gallium Nitride GaN  is an inorganic, chemical gallium nitride, a compound of nitrogen and gallium, and a binary III/V direct bandgap semiconductor used in blue light-emitting diodes since the 1990s. The compound is a very hard material with a purple rock crystal structure. Its 3.4 EV broadband provides special features for applications in optical electronics, high-power and high-frequency equipment. For example, GaN is a substrate that can produce violet (405 nm) laser diodes without double nonlinear optical frequency. Its low sensitivity to ionizing radiation (with another group of III nitrides) makes it a suitable material for satellite solar cell arrays. Military and space applications may also benefit, because the device exhibits stability in a radiation environment. Since Gallium Nitride GaN transistors can operate at higher temperatures and higher voltages than arsenide (GaAs) transistors, they can produce ideal power amplifier...

  Overview of calcium nitride Ca3N2 Calcium nitride  is a compound of calcium and nitrogen with the chemical formula Ca3N2. In most cases, calcium nitride can usually be used in large amounts. Hydrogen is easily produced from renewable energy sources and is the most abundant element in the universe. There are many sources of hydrogen, such as solid fuels, water, and renewable materials. Hydrogen is non-polluting and will form harmless water during use. Challenges related to the use of hydrogen as an energy source include the development of safe, compact, reliable, and cost-effective hydrogen storage and transmission technologies. Currently, hydrogen can be stored in three forms: compressed hydrogen, liquid hydrogen and chemical storage. High purity, sub-micron and nano powder forms can be considered. Calcium nitride Ca3N2 is the main raw material for high-end phosphors. The phosphor is more stable, has better performance, and has better effect under high temperature and high h...

  Overview of Zinc sulfide ZnS powder Zinc sulfide  is an inorganic compound with a chemical formula of ZnS and an appearance of white to off-white or light yellow powder. See the light darken. It is stable in dry air, and when placed in humid air for a long time or contains moisture, it will gradually oxidize to zinc sulfate. Soluble in dilute inorganic acid, soluble in alkali, insoluble in water. The relative density is 3.98 (α type), (d25) 4.102 (β type). It is irritating. The physical properties of  Zinc sulfide ZnS powder White or slightly yellow powder. It turns into crystals when burning in H2S gas. The alpha variant is a colorless hexagonal crystal with a density of 3.98g/cm3 and a melting point of 1700±28°C (202.66 kPa-20 atmospheres); the beta variant is a colorless cubic crystal with a density of 4.102g/cm3, which is converted to at 1020°C α type. Exist in sphalerite The chemical properties of Zinc sulfide ZnS powder Insoluble in water, soluble in acid. See the...

  Overview of Scandium Oxide Sc2O3 Powder Scandium oxide  is an inorganic compound with the molecular formula SC2O3. It is one of several oxides of high melting point rare earth elements. It is used to prepare other scandium compounds as well as high-temperature systems (due to its heat resistance and thermal shock characteristics), electronic ceramics, and glass components (as auxiliary materials). The chemical formula of scandium oxide is SC2O3. Properties: white solid. Cubic structure, rare earth sesquioxide. The density is 3.864. The melting point is 2403 ℃ ± 20 ℃. Insoluble in water, soluble in hot acid. Scandium oxide  Sc2O3 Powder   is one of the most important scan products. Its physical and chemical properties are similar to rare earth oxides (such as La2O3, Y2O3, and Lu2O3), so the production methods used in production are very similar. SC2O3 can generate scandium metal (Sc), products of different salts and metals. Various alloys. These scandium products ha...

  Overview of Aluminum Nitride Aluminum nitride (AlN)  is hexagonal, and pure AlN is blue-white, usually gray or off-white. Aluminum nitride ceramics have a series of excellent characteristics such as excellent thermal conductivity, reliable electrical insulation, low dielectric constant and dielectric loss, non-toxic, and thermal expansion coefficient matching with silicon. It is a new ceramic material with excellent comprehensive performance. Aluminum nitride characteristics Aluminum nitride  has the characteristics of not being corroded by molten aluminum, other molten metals and gallium arsenide, and especially has excellent corrosion resistance to molten aluminum. (1) Aluminum nitride has high thermal conductivity (about 320W/m·K), which is close to BeO and SiC, and is more than 5 times that of Al2O3; (2) The thermal expansion coefficient of aluminum nitride (4.5×10-6°C) matches that of Si (3.5-4×10-6°C) and GaAs (6×10-6°C); (3) Various electrical properties (dielect...

  Overview of  graphite powder lubricants Graphite  has a flaky crystal structure with good lubricating properties. It also has good electrical conductivity, thermal conductivity, wear resistance, pressure resistance, temperature resistance (temperature up to 450 ℃), and chemical stability, so graphite is widely used in the machinery industry to make various lubricants. The carbon atoms are held together firmly in the flakes. Since the bond between the thin plates is weak, graphite exhibits lower shear strength under frictional force. Therefore, it can be used as a solid lubricant and has become one of the traditional and main solid lubricating materials. Application of graphite lubricant Used as a lubricant, mainly to distribute fine graphite particles evenly in water, oil, or other media to form a stable colloid. It can be directly applied to parts that need lubrication by spin coating, dip coating, or spraying. Can be added to various lubricants and used together. Cont...

  Overview of Few-layer Graphene as Anode Material for  Lithium Battery The few graphene layers consist of ultra-thin layers of carbon atoms arranged in a hexagonal honeycomb lattice. Graphene films produced by chemical vapor deposition (CVD) are polycrystalline in nature, with multiple small graphene domains growing and merging into a continuous film. Compared with single-layer graphene, by inserting different substances into its layered structure, fewer layers are likely to develop into materials or heterostructures. Low-layer graphene inherits the original crystal structure and properties of natural flake graphite. It has a very large aspect ratio (diameter/thickness ratio), and has excellent electrical, thermal and mechanical properties. Has excellent electrical conductivity, lubricity, corrosion resistance, high temperature resistance, etc. The specific surface area of the small layer graphene is 400~700㎡/g, and the thickness is 0.55~3.74nm. Graphene has a high specific s...