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      Silicon Carbide ( SiC )

      Material Information

      Buy Silicon Carbide on-line

      We stock and supply the following standard forms:
      Chopped Fibre Fibre Monofilament Powder Sheet Tube
      Chopped Fibre Fibre Monofilament Powder Sheet Tube

      Choose a form to search our on-line catalogue  
      Common Brand Names:
      Nicalon
       
      General Description:  

      Silicon Carbide was first prepared in the early 1800's. It was in commercial production by 1892, as a powder for grinding and cutting, having a Mohs hardness of 9-10 (almost as hard as Diamond).

      Nicalon continuous multi-filament tow consists of fine filaments of ultra-fine ß-SiC crystals, giving strong particle bonding. This fibre has high strength and a high modulus in a high temperature atmosphere. It is oxidation resistant, with a high wettability and is consequently used in composites with metals, plastics and ceramics.

      A thicker monofilament, also used for composites, is also available from Goodfellow in 3 versions which differ only in their outer coating (used to improve adhesion to, and resist degradation by, the matrix of a composite). This monofilament is made by a chemical vapour deposition (CVD) process around a fine tungsten wire.

         

      Mechanical Properties

      Hardness - Vickers ( kgf mm-2 ) 2500

      Physical Properties

      Density ( g cm-3 ) 3.2

      Thermal Properties

      Melting point ( C ) 2650-2950

      Properties for Silicon Carbide Fibre

      Property Value
      Material Nicalon SiC CF tow
      Coefficient of thermal expansion - Longitudinal x10-6 K-1 3
      Density g cm-3 2.55
      Dielectric Constant 7-9
      Extension to break % 1.4
      Modulus GPa 200
      Specific Heat @25C J K-1 kg-1 1.1
      Tenacity GPa 2.8
      Thermal Conductivity W m-1 K-1 12
      Volume Resistivity @25C Ohmcm 103

      Properties for Silicon Carbide Monofilament

      Property Value
      Filament diameter 0.1
      Density g cm-3 3.4
      Tensile modulus GPa 400
      Tensile strength GPa 3.5-3.75

      Buy Silicon Carbide on-line

      We stock and supply the following standard forms:
      Chopped Fibre Fibre Monofilament Powder Sheet Tube
      Chopped Fibre Fibre Monofilament Powder Sheet Tube

      Choose a form to search our on-line catalogue  

      Index