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Vitreous Carbon

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Description

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.

Properties

Electrical

Electrical resistivity ρel

4.5E-5 Ω·m at 30 °C

General

Density ρ

1.42 g/cm³ at 20 °C

Permeability coefficient cperm

1E-9 cm²/s at 20 °C

Porosity Vvoid

0 %

open porosity

Mechanical

Compressive strength Rmc

480 MPa at 20 °C

Elastic modulus E

35 GPa at 20 °C

Hardness, Vickers HV

230 [-] at 20 °C

Thermal

Coefficient of thermal expansion α

2.6E-6 1/K at 20 °C

Max service temperature, inert Tmax,inert

3000 °C

Thermal conductivity λ

6.3 W/(m·K) at 30 °C

Technological properties

Application areas

Microscopy and Microanalysis, Metallurgical, Laboratory Research, Vacuum Evaporation, Semiconductor & Electronics, Nuclear, Aerospace

Other

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.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.