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    An Important Structural Ceramic Material Silicon Nitride Powder

    Silicon nitride Powder Inorganic substance Si3N4 has the chemical formula. This is a ceramic material used in structural applications. It has a high degree of hardness, lubricity and wear resistance.

    Silicon Nitride Properties:

    Powdered silicon nitride can be gray, off-white or white. It is a compound with a melting point of zero and strong resistance against high temperature creep. The softening point for reactive sintered silicon without a binder exceeds 1800degC.
    It has two hexagonal crystal structures, a andb. Its decomposition is 1850degC when exposed to 110MPa of nitrogen and 1800degC with air. The powder is characterized by a low thermal coefficient and a high level of thermal conductivity.

    Other than hydrofluoric acid or hot phosphoric, silicon nitride has a high corrosion resistance.

    Silicon Nitride Application:

    Due to its excellent properties, silicon nitride is often used in the manufacture of bearings. Other mechanical components, such as turbine blades or mechanical seal rings are also made from this material. The heating surfaces of engine parts can be made from silicon nitride materials, which resist high temperatures and are difficult to transfer heat.

    The material silicon nitride, which is a refractory of high quality, is widely used. SI3N4 refractory material is used for blast furnace bodies, and other parts. SI3N4 BN horizontal continuous cast separation ring has a fine-structured ceramic material, with a uniform structure and high strength.

    Silicon nitride can be used as a ceramic material for high temperature engineering components, advanced materials in metallurgical industries, sealing and anti-corrosion materials in chemical industries, cutting and tooling in machining industries, etc.

    The silicon nitride used for ultra-high temperatures gas turbines, aircraft, electric heaters, etc. can also be found in solar cells.

    Tech Co., Ltd. is a professional The powder is silicon nitride With over 12 year experience in chemical product research and development. We accept payments by Credit Card, T/T (wire transfer), West Union, Paypal, and T/T. The goods will be shipped to overseas customers via FedEx or DHL.

    You can contact us for high quality silicon-nitride powder. Contact us Send an inquiry.

    2023-07-22

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    Application of Silicon Nitride Ceramics in Refractory Industry

    Silicon nitride Has high strength. Especially hot-pressed silica nitride which is one the hardest materials on the planet. It can withstand temperatures up to 1200degC and maintain its strength. After heating, it will not turn into a melted substance and won't decompose till 1900degC.
    Silicon nitride resists chemical corrosion with amazing strength. It is resistant against almost all organic and inorganic acid solutions. It's also a highly-performing electrical insulating materials.

    Ceramics made of silicon nitride have many excellent properties. They are used for bearings as well as turbine blades.

    Silicon Nitride as a Refractory Material

    The excellent high temperature properties of silicon nitride are considered to make it a promising material for high-temperature structures. These include high high-temperature strengths, corrosion resistance and good wear resistance.

    Application of ironmaking refractories
    Recent years have seen significant improvements in the corundum-silicon-carbide-silicon-nitride products used for large-scale blast-furnaces. In the middle section and load-bearing part of coke kilns, large blast furnaces are commonly made from silicon carbide or silicon nitride.

    2) Application in steelmaking Refractories
    The bottom ladle material has been made of silicon nitride in recent years. The addition of silicon-nitride materials to the slideplate improves the wear and erosion resistance of the slideplate, as well as its service life. It also reduces the price of steel per ton for ladle refinement.

    (3) Application to refractory smelting non-ferrous metals, such as copper, aluminum, zinc, etc.
    Silicon nitride does not wet metal solutions at high temperature, so it is suitable for high-temperature products in the nonferrous metal smelting processes, such as thermowells. Smelting furnace linings. Container linings. Crucibles. Silicon nitride ceramic products have good thermal shock resistance and can be used stably for a long time at high temperatures or in high-temperature-low-temperature cycles.

    (4) Application in kiln furniture materials
    The ceramic shed consists of a silicon-nitride-bonded silicon carbide prepared by reaction sintering at high temperature in nitrogen atmosphere, using silicon carbide as a particle raw material with metal Si as a fine powder. This material has remarkably improved performance.

    Tech Co., Ltd. is a professional nitride powder We are a chemical product supplier with 12 years of experience. We accept payment by Credit Card, T/T (West Union), Paypal and T/T. The goods will be shipped to overseas customers via FedEx or DHL.

    You can contact us for high quality silicon-nitride powder. Contact us Send an inquiry.

    2023-07-19

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    Si3N4 Powder Silicon Nitride Ceramics Properties

    Silicon nitride Inorganic substance Si3N4 has the chemical formula. It is an important ceramic structural material with high wear resistance, inherent lubricity and high hardness. The atomic crystal silicon nitride resists oxidation when heated to high temperatures.
    It is a synthetic ceramic. Because the covalent bonds between silicon and nitrogen in its structure are strong, it has high strength, hardness, corrosion, oxidation, abrasion, and thermal shock resistance.

    Silicon Nitride: Properties

    Normal temperature strength and high fracture toughness are characteristics of silicon nitride. They will maintain their strength at high temperatures. The properties of the material are:

    (1) Silicon Nitride material is low in linear expansion, has good thermal conductivity and thermal shock resistance,
    (2) The hardness level of silicon nitride, at 99.5, is the second highest in the world, only behind diamond and BN.
    This material is self-lubricating as well as wear resistant.
    (4) Silicon nitride exhibits good mechanical properties.
    (5) Silicon nitride has excellent insulation properties at high temperatures;
    (6) Silicon nitride is very stable and does not corrode by any inorganic acid except hydrofluoric. It can be found in some alkalis.
    (7) When silicon-nitride ceramics oxidize, a dense layer of silicon dioxide is formed on their surface. This film prevents continued oxidation. Its oxidation resist temperature can reach 1400. In reducing atmosphere, it can also be used to up to 1870.
    Silicon nitride has a non-wetting property with high-temperature metallic solution and molten steel slag. This makes it an excellent corrosion-resistant slag material and high-temperature filter.

    Material industry views silicon nitride ceramic as an excellent engineering material. It can be used for high temperature fields.

    Tech Co., Ltd. is a professional nitride powder We are a chemical product supplier with 12 years of experience. We accept payment by Credit Card, T/T (West Union), Paypal and T/T. The goods will be shipped to overseas customers via FedEx or DHL.

    You can contact us for high quality silicon-nitride powder. Contact us Send an inquiry.

    2023-07-18

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    The Applications of Aluminum Niitride

    How do you define it? Aluminum Nitride ? The covalent bond chemical, aluminum nitride or AIN is an atomic compound that is not toxic, safe, white, or off-white.
    Aluminum Nitride has the following main attributes
    AlN remains stable at 2200 degrees C. Strength at room temperatures is good, but it decreases gradually with temperature. It is an excellent thermal shock material because it has a low thermal conductivity. Aluminum nitride is resistant to corrosion and ideal as a crucible for the casting of pure iron or aluminum. The potential electrical component aluminum nitride, which is an excellent electrical insulator that has good dielectric characteristics and also offers promising results as an electrochemical component, is aluminum nitride. An aluminum nitride layer on gallium arsenide protects it against ion implantation in annealing. Aluminium nitride also acts as a catalyst in the transformation of hexagonal to cubic boron nutride. At room temperature it reacts slow with water. Aluminum powder can be made in nitrogen atmosphere or ammonia at 8001000. It is white to gray-blue and easily synthesized. It can be produced by reaction of Al2O3C–N2 system at 1600 1750. The powder is off-white. Oder prepared using vapor-phase reactions of aluminum chloride, ammonia. It can be prepared using the AlCl3-NH3 vapor-phase method.
    Aluminum Nitride Properties
    Other Titles Aluminium nitride
    24304-00-5
    Compound Formula AlN
    Molecular Weight 40.9882
    Appearance From white powder to pale yellow powder
    Melting Point 2200 degC
    Boiling Point 2517 degC (dec.)
    Density 2.9% to 3.3 grams/cm3.
    Solubility of H2O N/A
    Electrical Resistivity 10 to 12 10x 10x O.m
    Poisson's Rate 0.21 to $0.31
    Specific Heat 780 J/kg-K
    Thermo Conductivity 80 to 200 W/m/K
    Thermal Expansion 4.2 to 5.4 um/mK
    Young's Module 330 GPa
    Exact 40.9846
    Monoisotopic 40.9846
    AlN powder (CAS 24304–00-5)
    Use of aluminum nitride
    The majority of current research centers on developing a semiconductor light-emitting diode, either gallium nitride (or alloy aluminum galium nitride), that emits ultraviolet light having a wavelength of 250 nanometers. An inefficient diode may emit light up to 210nm (as reported by 1 May 2006). An aluminum nitride single crystal has an energy gap measuring by reflectance from ultraviolet rays. It has an energy value of 6.2eV. According to theory, this energy gap permits waves at wavelengths of around 200 nanometers to pass through. However, commercialization presents many problems. Optoelectronic engineering uses aluminum nitride as an optical layer, in optical storage interfaces and electronic substrates. Also, it is used to make chip carriers that have high thermal conductivity and military applications.
    The properties of aluminum-nitride's piezoelectric effects make epitaxial stretching crystals of aluminum nitride possible. This is used as a surface acousticwave detector. They are mounted on silicon wafers. It is difficult to produce thin films reliably in these locations.
    Aluminum nitride clays can be used for heat exchangers and parts that require high temperatures.
    It can be used in crucibles or casting materials to smelt Al, Cu, Ag and Pb by using aluminum nitride clays. This ceramic resists the corrosion of iron, aluminum, and other metals.
    Aluminum Niitride's main supplier
    Luoyang Tech Co., Ltd. is a company that specializes in professional IT services. Nutrirde powder Over 12 years' experience in developing and researching chemical products. You can pay by Credit Card, T/T or West Union. We will send the items to overseas customers via FedEx or DHL.
    You can find high-quality, high-quality boron carbonide powder here Please contact us You can also send us an enquiry

    2023-04-19

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