National Physical Laboratories has offered to license its technology for making high density graphite. The technology is an indigenously developed one step, simple and cost-effective process for synthesis of isotropic graphite using self-sintering semi-coke based carbonaceous material derived from coal tar pitch. Properties of graphite samples are much better in comparison to those prepared from conventional filler and binder method.
High density graphite is a very special material with high density, high strength and fine micro- structure. It can be used for variety of applications because of its ability to withstand extremely high temperatures while maintaining its strength and shape.
Additionally, these products are inexpensive and easy to machine in any shape. In the present technology, graphite samples were developed from coal tar pitch based semi-coke powder without using any extra binder and they exhibited superior properties (given in Table) as compared to those synthetic graphite manufactured from conventional filler and binder process which is subsequently carbonized, impregnated and graphitized.
Crucibles and for molten metals and hot pressing dies, collector of travelling wave tube, in nuclear reactors as moderator, reflector and fuel elements, as electrodes and brushes in electric motors and electric discharge machining, for military applications such as nose tip of missiles, thrust and heat shields.
For further details, contact:
Industrial Liaison Group (ILG)
Room No. 46-A, Main Building CSIR-National Physical Laboratory
Dr. K.S. Krishnan Marg New Delhi 110012,
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