Coked product containing domains of oxides

Details Coked product containing domains of oxides Coked product containing domains of oxides

1990-11-13

1992-06-09

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

501100, C04B 3552

Patent

active

051206897

ABSTRACT:
Process for production of a ceramic material, e.g. a carbide, nitride, boride or silicide, by reacting at least one compound of a metallic or non-metallic element having two or more groups reactive with hydroxyl groups with at least one organic compound having two or more hydroxyl groups to form an oxygen-containing polymeric product, heating the polymeric product to produce a coked product containing carbon and an oxide of the metallic or non-metallic element, and heating the coked product to produce a ceramic material, in which the proportion by weight of carbon to the oxide of the metallic or non-metallic element in the coked product is in the range from 50% to 150% of the proportion which is theoretically required to produce the ceramic material.

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Chemical Abstracts, vol. 96, No. 12 (Jun. 1982), p. 137, 201996k (Japanese Pat. publ. 81155013).
Zhang et al., "Preparation of Silicon Nitride from Silica", Journal of American Ceramics Society, vol. 67, No. 10 (1984) pp. 691-695).
Chemical Abstracts, vol. 104, No. 12, (Mar. 1986), pp. 338, 93927m.
Yajima et al., "Continuous Silicon Carbide Fiber of High Tensile Strength", Chemical Letters (1975), p. 931.
Yajima et al., "Development of High Tensile Strength Silicon Carbide Fiber Using an Organosilicon Precursor", Nature, vol. 273, pp. 525-527.
Farag et al., "Pyrolysis and Combustion of Treated and Untreated Rice Hulls", Thermochimica Acta, 81 (1984), pp. 77-86.

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