Graphite electrodes and their production

Compositions – Electrically conductive or emissive compositions – Elemental carbon containing

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204294, 208 44, 252510, 264105, 428489, 429217, C04B 35532, C25B 1112, H01B 104

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054137381

ABSTRACT:
A unitary composite structure having improved flexural strength and a reduced coefficient of thermal expansion comprising a heterogeneous combination of a carbonaceous reinforcing material interbonded with a matrix material, wherein the said matrix material is a poorly graphitizing carbonaceous pitch containing polymerized and cross-linked aromatic components is disclosed. Graphite electrodes comprised of the poorly graphitized pitch matrix material acting as a binder and/or an impregnant are also disclosed. Processes for the preparation of the poorly graphitizing pitch, the composite structure, and particularly the graphite electrodes are disclosed as well.

REFERENCES:
patent: 3280042 (1966-10-01), Bannikov et al.
patent: 3505090 (1970-04-01), Pinchbeck
patent: 4066737 (1978-01-01), Romovacek
patent: 4188279 (1980-02-01), Yan
Chemical Changes During the Mild Air Oxidation of Pitch J. B. Barr and I. C. Lewis, Carbon, vol. 16, pp. 439-444 (1978).
Chemistry of Carbonization I. C. Lewis Carbon, vol. 20, No. 6, pp. 519-529 (1982).
Review-Science and technology of graphite manufacture S. Ragan and H. Marsh, Journal of Materials Science, pp. 3161-3176 (1983).

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