Amorphous boron is an attractive material

Overview of Amorphous Boron Powder

Amorphous boron is a brown powder; while crystalline boron is black, very hard (approximately 9.5 on the Mohs scale), and has poor conductors at room temperature. Elemental boron is used as a dopant in the semiconductor industry, while boron compounds play an important role as lightweight structural materials, pesticides and preservatives, and chemical synthesis reagents.

Amorphous boron is an attractive material that can be used as fuel additive dopants in solar cells and boron neutron capture therapy. In particular, amorphous boron is a very interesting material as a fuel additive because of its high quality and volume ratio combustion energy.

Elemental boron rarely exists in its pure form in nature, but in the form of orthoboric acid or borate. The energy band gap of boron is 1.50 to 1.56 eV, which exceeds that of silicon or germanium. It transmits some infrared rays. Although it is a good electrical conductor at high temperatures, the electrical conductivity of boron will greatly decrease at room temperature. High purity boron is crystalline. Crystalline boron can be obtained by gas-phase reduction of boron trichloride or boron tribromide with hydrogen on an electrically heated filament.

Traditional methods for preparing amorphous boron powder include molten salt electrolysis, diborane pyrolysis, boron hydrogen chloride reduction, and magnesium thermal reduction. Manufactured with potassium chloride-potassium fluoroborate-boron oxide molten salt. Successfully prepared boron powder with a purity of over 90%. However, due to the limitations of low current use efficiency, poor working conditions and discontinuous production, the molten salt electrolysis method has not been further developed. In addition, even though the diborane pyrolysis method and the hydrogen chloride boron reduction method can obtain high-purity boron powder, harsh working conditions and serious pollution problems limit the application of these methods. At present, due to technical limitations, only boron powder with a boron content of less than 90% and a particle size greater than 2 μm can be obtained by the metal thermal reduction method.

Applications of Amorphous Boron Powder

The chemical properties of Amorphous boron powder are more active than crystalline elemental boron, and it is often used instead of a diamond to make cutting tools or drill bits. A small amount of boron is added in the metal smelting process, which can be used as a deoxidizer to prevent the metal from oxidizing at high temperatures; transition to form an alloy to improve the performance of the metal.

Amorphous boron powder is an important energy material. Used as solid fuel in the composite solid propellant. The calorific value of boron is twice that of carbon, twice that of aluminum and twice that of magnesium. This value is almost three times that of hydrocarbon fuels, the density is only slightly lower than that of aluminum, and it has the highest volumetric heating value. In terms of its energy, boron should be the best non-metallic fuel. In addition, amorphous boron has an irregular shape and a large proportion of extreme values, which greatly reduces the ignition temperature.

Amorphous boron is used as rocket fuel igniters and pyrotechnic torches. It makes the flare bright green. The most important compounds of boron are boric acid (boric acid), borax (sodium borate) and boron oxide. These can be found in eye drops, mild fungicides, washing powders and tile glazes.

 Amorphous Boron Powder Price

Amorphous boron price will vary randomly with the production cost, transportation cost, international situation, exchange rate, and market supply and demand of Amorphous boron powder. Tanki New Materials Co.,Ltd Aims to help All industries and Chemical Wholesalers to find high quality, cheap price Nanomaterials and chemicals by providing turn-key customize manufacturing services. If you are looking for Amorphous boron, please feel free to send an inquiry for the latest price of Amorphous boron powder.

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