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Glassy carbon, a brittle form of carbon with a randomized structure, has certain specific properties making it appropriate for fields of application outside the scope of carbon types previously known. Glassy carbon offers high purity, corrosion resistance, thermal stability and a structure impermeable to both gases and liquids. Alta Aesar's glassy carbon products are subjected to a high temperature heat treatment which imparts special material properties including significantly improved corrosion resistance and strength. Advantages over more traditional materials are:

  • Resistance to all wet decomposition agents
  • No memory effects (uncontrolled adsorption and release of foreign elements)
  • No contamination of analytical samples
  • Stability to acid and alkaline melts
  • No wetting effect of metal melts
  • Good resistance to thermal shock allows rapid heating and cooling times
  • Resistive to abrasive wear
  • Good electrical conductivity

Applications

  • Vessels for ultra-high purity materials technology, e.g. semiconductor connections and crystal­growing, e.g. doped halogenide crystals
  • Crucibles for high-temperature differential thermal/thermal gravimetric analyses
  • Specimen holders and cuvettes for atomic absorption and atomic emission spectroscopy and multi-element analyses with plasma excitation, e.g. by the ICP method (inductively coupled plasma)
  • Protective tubes for thermo-elements and viewing tubes for pyrometers
  • Shaping tools for the glass industry
  • Electrochemistry

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Metales & materiales

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Análisis y material de laboratorio