Vitreous Carbon Planchets

Materials Vitreous carbon planchets
Stock No RVC-117-43
CAS 7440-44-0
Purity 99.9%
Form Round Disc
Appearance Black solid Disc
Diameter 1 to 50 mm (customization available)
Thickness 1 to 10 mm

(Other Sizes customization is also available, please inquire)

maximum temperature 3000 °C (under vacuum or inert gas)
density: 1.42 g/cm3
open porosity 0 %


Physical Properties of Vitreous Carbon
Maximum Service Temperature (vacuum or inert gas) 3000°C
Density 1.42 g/cm³
Open Porosity 0%
Permeability Coefficient 10-9 cm²/s
Vickers Hardness 230HV
Flexural Strength 260 MPa
Young’s Modulus 35 GPA
Compressive Strength 480 MPa
Electrical Resistivity (30°C) 45Ωµm
Thermal Conductivity (30°C) 6.3 W/(Km)
Expansion Coefficient (20-200°C) 2.6 x 10-6/K

Vitreous carbon and carbon (graphite) planchets are ideal substrates for X-ray analysis and backscattered electron imaging in an SEM or electron microprobe. The spectroscopically pure carbon discs provide an excellent conductive, low emission X-ray background free of any characteristic X-ray peaks except carbon. Carbon planchets are favored over the non-conductive diamond planchets (charging will have negative effects on the analytical results and can distort X-ray mapping and imaging).

The vitreous carbon and carbon (graphite) planchets can be cleaned and used again. For fine powders and imaging applications, the vitreous carbon is the best choice. For X-ray applications of larger particles or specimens or for applications where the planchets can not be used again, the carbon (graphite) planchets are adequate.

Glassy carbon is widely practiced as electrode material in electrochemistry, as considerably as for high-temperature crucibles and as a part of some prosthetic devices.

The crystalline carbon electrode is one of the widely used working electrodes. It is a good inert electrode with good electrical conductivity, high hardness, high brightness, high hydrogen potential, a wide range of polarization and chemical stability. It can be used as an inert electrode directly for the anodic solution, voltammetric determination of the cathode and the Valencia ion, and it can also be used as a chemically modified electrode.

Unique Features

  • High-purity
  • Excellent Stability as high as at 3,000 °C in vacuum / at 500 °C in the air
  • Well Inert against Chemical erosion
  • Impermeability to Gas and Solution
  • Significant Hardness / Strength
  • Brings Fine surface condition after polishing
  • Favorable electric conducting property
  • Dielectric characteristics in High-frequency
  • Highly Resistant against Inorganic and Organic salts
  • Good Bio-Compatibility
  • Isotropic Physical/Chemical properties

Please enquire for other Vitreous carbon planchets having different thicknesses, Diameter, Length, and sizes, etc.

If the item shown is not exactly what you require please let us know by sending us a message

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