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FAQ1

  • What is silicon Carbide?

    Silicon carbide is an inorganic substance with the chemical formula SiC. It’s a typical covalently bonded compound, with 78% of the total energy of the Si-C bond in the covalent state and 22% in the ionic state, and exists in nature in the form of the rare mineral moissanite.
    In the 1890s, Edward Goodrich Acheson, an American, invented the synthesis process of silicon carbide, which was made by smelting quartz sand, petroleum coke, coal coke and other raw materials in a resistance furnace at high temperature.
     

  • What is silicon carbide material performance?

    Mechanical properties: high hardness, high strength, high elastic modulus, low friction coefficient.
    Chemical characteristics: strong wear resistance, corrosion resistance, acid and alkali resistance, strong anti-oxidation.
    Thermal features: low coefficient of thermal expansion, high thermal conductivity, high temperature resistance.

  • What are the applications of silicon carbide?

    Main applications: High-performance ceramic, semiconductor material, refractory material, wear-resistant material, corrosion resistant material, abrasives and grinding tool, metallurgical additives.
     

  • What's the classification of silicon carbide?

    1.According to the classification of densification process: 
    Reaction bonded silicon carbide, sintered silicon carbide and recrystallized silicon carbide, hot pressed sintered silicon carbide, hot isostatic pressed silicon carbide and chemical vapor deposition silicon carbide material, etc.
     
    2.According to the classification of phase composition： 
    Solid phase sintering silicon carbide, liquid phase sintering silicon carbide, SiC Composite, SiC nanoparticle composite, silicon carbide-graphite particles, carbon nanotubes, whisker composite ceramics and SiC-carbon fiber ceramic matrix compound material, etc.

  • Why is reaction bonded silicon carbide not suitable for strong acid and alkali working conditions?

    Since reaction bonded silicon carbide contains free silicon(Si), the free silicon can be chemically corroded in the medium of strong acid and alkali, resulting in the reduced  service life of products. So it's not recommended.  

  • What are the application fields of silicon carbide product of Joint Power?

    The silicon carbide products we manufacture are mainly used in the mechanical seal industry.
    The silicon carbide seal ring is the most critical component of mechanical seal as primary and mating rings friction pair material.

  • What are silicon carbide grades of Joint Power?

    Grade: SJP-RB for Reaction Bonded Silicon Carbide
    Grade: SJP-SS for Sintered Silicon Carbide
    Grade: SJP-SG for Graphite Loaded Sintered Silicon Carbide
    Grade: SJP-SP for Porous Silicon Carbide
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