Glassy (Vitreous) Carbon substrates – GC 25/25/custom
It is a pure carbon material (>99.9 %) with a fullerene-related structure, commonly used as working electrode or current collector in electrochemical measurements. It has an extreme corrosion resistance at acidic and alkaline media and does not form any intercalation compounds.
Typically, a thin film of studied material is deposited on the glassy carbon surface. A special attention should be paid to provide a proper adhesion between studied material and substrate. Surface pretreatment such as polishing, vacuum heat treatment, laser activation or electrochemical activation may be applied to improve adhesion. After use the substrate can be chemically cleaned and mechanically polished using micro-sized abrasives (e.g. using sub-micron alumina powder) followed by sonication. The glassy carbon substrate can be used repeatedly.
size: 25 mm x 25 mm
maximum temperature: 3000 °C (under vacuum or inert gas)
density: 1.42 g/cm3
open porosity: 0 %
permeability coefficient: 10-9 cm2/s
Vickers hardness: 230 HV
specific electrical resistance at 30 °C: 45 Ωµm
thermal conductivity at 30 °C: 6.3 W/(Km)
median linear coefficient of expansion (20-200 °C): 2.6x10-6 1/K
1 glassy (vitreous) carbon substrate – GC 25/25/custom