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Silicon Carbide ( SiC )

Material Information

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We stock and supply the following standard forms:
Fiber Foam Monofilament Powder Sheet
Fiber Foam Monofilament Powder Sheet

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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 fiber 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 Fiber

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 0.1mm
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:
Fiber Foam Monofilament Powder Sheet
Fiber Foam Monofilament Powder Sheet

Choose a form to search our on-line catalog  

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