Vitreous or glassy carbon is a form of pure carbon produced by the thermal decomposition of a three-dimensionally crosslinked polymer. It has a high flexural strength. The zero open porosity gives a low permeability to gases.
Glassy carbon has excellent resistance to a wide range of aggressive chemical enviroments and can, therefore, be used as an alternative material to precious metals for laboratory equipment and, for example, for electrodes in polarography.
Glassy or Glassy carbon or vitreous carbon is a non - graphitizing or non - graphitizable carbon which combines glassy and ceramic properties with those of graphite. Unlike graphite, glassy carbon has a fullerene - related microstructure. This leads to a great variety of unique materials properties.
Electrical resistivity ρel
4.5E-5 Ω·m at 30 °C
1.42 g/cm³ at 20 °C
Permeability coefficient cperm
1E-9 cm²/s at 20 °C
Compressive strength Rmc
480 MPa at 20 °C
Elastic modulus E
35 GPa at 20 °C
Hardness, Vickers HV
230 [-] at 20 °C
Coefficient of thermal expansion α
2.6E-6 1/K at 20 °C
Max service temperature, inert Tmax,inert
Thermal conductivity λ
6.3 W/(m·K) at 30 °C
Microscopy and Microanalysis, Metallurgical, Laboratory Research, Vacuum Evaporation, Semiconductor & Electronics, Nuclear, Aerospace
The key features are: High purity, resistance in inert gas or vacuum up to 3000°C and in air up to 600°C, corrosion resistance, impermeability to gas and liquids, no open porosity, high hardness and strength, low density, extreme resistance to thermal shock, good electrical conductivity, no wetting by many saline, metallic and ceramic melts, physical and chemical properties are isotropic
This material data has been provided by Goodfellow.