Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – With carbonizing – then adding carbonizable material and...
Patent
1984-02-13
1985-07-30
Derrington, James
Plastic and nonmetallic article shaping or treating: processes
Carbonizing to form article
With carbonizing, then adding carbonizable material and...
264 60, 264 63, 264 65, C01B 3136
Patent
active
045320918
ABSTRACT:
A porous green-state body of carbon, with or without silicon carbide, made with a cokable binder, is crumbled to produce relatively coarse grains in the range from 0.2 to 10 mm and a fraction of the particles so produced with a much more limited range of grain size is then used to produce a second green-state body, which is then coked, siliconized if the silicon is not already provided in the making of the precursor body that was broken up, and converted into a silicon carbide body. If the siliconizing is done by immersion in a bath of molten silicon, the excess silicon is removed by vaporization or by boiling in sodium hydroxide solution.
REFERENCES:
patent: 3947550 (1976-03-01), Fitchmun
patent: 4154787 (1979-05-01), Brown
patent: 4248814 (1981-02-01), Yajima
patent: 4385020 (1983-05-01), Morelock
Dias Francisco J.
Kampel Marian
Luhleich Hartmut
Derrington James
Kernforschungsalage Julich GmbH
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