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Silicon nitride ceramic with excellent physical, chemical, and mechanical properties

Silicon Nitride

Silicon nitride ceramic with excellent physical, chemical, and mechanical properties

Silicon Nitride Ceramic is a ceramic material composed of silicon nitride (Si N₄) that has excellent physical, chemical, and mechanical properties and is therefore widely used in various of fields.

Main Characteristics: Light Weight,High Wear Resistance and High Heat Resistance.

Main Applications: Heat, Wear and Corrosion Resistant Parts.

Silicon nitride (Si3N4) is a substance with high covalent bond and high temperature structural material with excellent performance in high temperature strength, oxidation resistance and chemical resistance.

    Silicon nitride ceramics have outstanding advantages: low density, high temperature resistance, self-lubrication, corrosion resistance. Dense Si3N4 ceramics also exhibit high fracture toughness, high modulus properties and self-lubricity, which can be excellent resistance to a variety of wear and withstand harsh environments that can cause other ceramic materials to crack, deform or collapse, including extreme temperatures, large temperature differences, and ultra-high vacuum.

    Main Applications Of Silicon Nitride Ceramics

    Mechanical engineering: Silicon nitride ceramics have high hardness, excellent wear resistance and corrosion resistance, and are widely used in mechanical engineering fields. It can be used to manufacture parts such as bearings, seals, cutting tools and nozzles at high temperatures and speeds, providing excellent performance and long life.

    Automotive industry: Due to the high temperature stability and wear resistance of silicon nitride ceramics, it is used in the manufacture of automotive engine components. Silicon nitride ceramics can be used to make high-performance engine parts such as piston rings, cylinder liners and valves, helping to improve fuel efficiency and reduce emissions.

    Aerospace: The light weight, high strength and high temperature resistance of silicon nitride ceramics make them ideal materials for aerospace applications. It can be used to manufacture key components such as engine components, turbine blades, thermal isolation materials and spacecraft thermal protection to meet the requirements of high temperature, high pressure and extreme environments.

    Chemical industry: Silicon nitride ceramics are widely used in the chemical industry due to their excellent chemical stability and corrosion resistance. Silicon nitride ceramics can be used to manufacture chemical reaction vessels, catalyst carriers, acid and alkali resistant equipment and pipes, and can withstand corrosive media and high temperature conditions.

    Optoelectronics: Silicon nitride ceramics have excellent optical and electronic properties, so they have important applications in the field of optoelectronics. It can be used to manufacture high temperature and high power fiber amplifiers, lasers, optical communication devices and optical Windows...etc., with excellent optical transmittance and thermal stability.

    Test Item Performance
    Density (g/cm3) 3.2
    Elastic Modulus (GPa) 320
    Poisson's Ratio 0.24
    Thermal Conductivity W/(m*k)Room Temp 25
    Coefficient Of Thermal 2.79
    Expansion( 10-6/K) (RT〜500°C)
    Rupture Strength 3 Point (MPa) 950
    Weibull Modulus 13.05
    Vickers Hardness (HV10) Kg/mm 1490
    Fracture Toughness (KI,IFR) 6.5〜6.6
    Pore Size (gm) ≤7
    Mix(quantity/cm ) 25-50 2
    50-100 0
    100-200 0
    >200  0