Coatings for protecting materials against reactions with atmosph

Details Coatings for protecting materials against reactions with atmosph Coatings for protecting materials against reactions with atmosph

1994-01-14

1995-05-30

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Refractory

501 92, 501154, 427201, 427202, 427204, 427205, 428408, 428689, 428698, C04B 3516, C04B 3558, B32B 1800

Patent

active

054200849

ABSTRACT:
The invention relates to a coating for protecting materials against reactions with atmosphere at high temperatures. The coating according to the invention comprises a mixture of zirconium diboride and colloidal silica, advantageously with various additives such as silicon carbide. The coating according to the invention can, for example, efficiently protect carbon and graphite up to 1350.degree. C.

REFERENCES:
patent: 4308114 (1981-12-01), Das et al.
patent: 4588700 (1986-05-01), Reven
patent: 4795677 (1989-01-01), Gray
patent: 5091222 (1992-02-01), Nishio et al.
patent: 5234507 (1993-08-01), Sato et al.
patent: 5258334 (1993-11-01), Lantz, II
patent: 5310476 (1994-05-01), Sekhar et al.
patent: 5330789 (1994-07-01), Booth et al.
Japan Abstract JP 54 092 271 (Derwent, London, GB) (Canon KK) Jul. 1979.
Japan Abstract JP 2 111 679 (Derwent, London, GB) (Tokai Carbon KK) Apr. 1990.
Patent Abstracts of Japan, vol. 014, No. 439, 1990, Aug. JP A-21 72 860 (Toshiba Ceramics Co).

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