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Vitreous Carbon
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Vitreous Carbon shares similar properties to glass, fragility, closed microporosity and impervious to gases. These features combine to offer exceptional resistance to general chemical agents. Only Oxygen above 600C and oxidants may attack Vitreous Carbon.
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Applications:
Fusion or evaporation
Electrodes for electrochemical analysis
Glass working
Manufacture of binary materials for electronics (Gallium-Arsenic)
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Standard shapes available:
Crucibles
Disc
Rods
Capsules |
--Square Plates
--Tubes (plain/flanged, open/closed)
--Boats
--Special order* |
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* If specifying a special order item customers should be aware manufactured shapes are limited to 3mm thickness and close tolerancing is not possible due to the nature of the material and the manufacturing process
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Graphite for emission spectrographic analysis
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Applying stringent control over raw material selection and manufacture we offer the analyst a range of materials of exceptional high purity and consistancy, ideal for the field of Emission Spectrography.
The following paramaters receive particular attention
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| Raw Materials |
Finished Products |
| Qualitative Analysis |
Apparent and absolute density |
| Crystallography |
Porosity |
| Grain Size |
Resistivity |
| Volatiles and ash content |
Flexural Strength |
| Melting/softening point (binders) |
Micrography |
| Viscosity |
Ash content |
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Purity |
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In addition to the materials available we also offer to machined electrodes to ASTM specifications, in all our grades. The list includes Simple , Counter , Cupped, Harvey, Scribner and Fassel electrodes. This is by no means exhaustive, please contact us with your requirements
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Atomic Absorbtion Spectroscopy - Furnace Tubes
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This product is one of the key replaceable components at the heart of all Spectroscopy analysis equipment. To support the diverse fields of analysis this equipment covers, we produce a range of tubes to suit the majority of currently available machines in two material options.
1. Ultra pure, high-density graphite.
2. Ultra pure, high-density graphite + pyrocarbon coating.
With the pyrocarbon layer applied to the internal and external faces both surfaces become impervious to liquids and vapours. In addition the chemical inertia of pyrocarbon limits the formation of stable carbides and increases life.
As a consumable item our product offers a cost effective alternative to the OEM. The list of machines covered by our standard parts is large and continues to grow so please contact us with your requirements.
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Graphite Crucibles - for gas content in metals
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Gas dosing crucibles another regularly used consumable in analysis equipment is another area of specialisation for the Carbone Lorraine Groupe. The grade of graphite employed for this product has been developed particularly for this application to provide consistant results.
Again we manufacture a long list of crucible types covering the majority of analysis equipment available and continue to add more. Please contact us with your requirements
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