Artificial graphite

Details Artificial graphite Artificial graphite

1978-06-02

1980-08-12

Veritz, O. R.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

423445, 423449, C01B 3104, C01B 3102

Patent

active

042173361

ABSTRACT:
A dual-textured graphite has been produced having an apparent coarse strongly bonded grained structure (the macrotexture) in which each coarse grain is formed from a number of strongly linked ultrafine grains (the microtexture). The dimensions of the coarse grains are from 0.4 to 6.0 m.m. while those of the ultrafine grains are below 0.050 m.m. The fine grains are linked by graphitized pore-containing carbon having pores of less than 2.mu. diameter. The coarse grains are also linked by graphitized pore-containing carbon having pores of from 5 to 20.mu. diameter. Further characteristics of the graphite are a coefficient of linear expansion of 4-6.times.10.sup.-6 /.degree. C., thermal conductivity of 0.20 cal/cm/.degree. C./sec., electrical resistivity of 1500-2000.mu. ohms/cm and anisotropy factor not exceeding 1.4. A process for producing such product from pitch and petroleum or coal tar coke is described.

REFERENCES:
patent: 3955957 (1976-05-01), Newman et al.
patent: 4071604 (1978-01-01), Schwemer

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