Composition for preparation of silicon carbide powder

Details Composition for preparation of silicon carbide powder Composition for preparation of silicon carbide powder

2006-09-19

2006-09-19

Group, Karl E. (Department: 1755)

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

C423S345000

Reexamination Certificate

active

07109138

ABSTRACT:
The synergistic composition consists of a mixture of a source of pure silica such as silicon dioxide, a source of carbon such as activated charcoal, β-silicon carbide and a source of iron such as ferric nitrate. The cost effective synergistic composition is useful for the preparation of improved silicon carbide powder containing at least 90% SiC preferably rich in the β-phase. Silicon carbide powder finds wide usage in the manufacture of products suitable for refractory and engineering applications.

REFERENCES:
patent: 3754076 (1973-08-01), Cutler
patent: 3836356 (1974-09-01), Irani
patent: 3920446 (1975-11-01), Irani
patent: 5525556 (1996-06-01), Dunmead et al.

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