Massive crystalline aluminosilicate with expanded structure and

Details Massive crystalline aluminosilicate with expanded structure and Massive crystalline aluminosilicate with expanded structure and

1988-01-07

1989-01-10

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 56, 501 85, 423412, 264 43, 65 22, C03C 1100

Patent

active

047973773

ABSTRACT:
The present invention relates to a novel crystalline massive aluminosilicate with an expanded structure and to its process of manufacture. The particular structure is a closed cell structure containing nitrogen. It is obtained by: grinding industrial glass; adding aluminum based nitride in the proportion of 0.1 to 20% by weight with respect to the weight of the ground industrial glass; mixing the ground glass and so-added nitride; oxidizing the nitride within said mixture by heating to a temperature of 800.degree. to 1000.degree. C. for about 1 hour, and cooling and recovering the expanded crystalline aluminosilicate. The material has multiple applications in the building industry and in the construction of furnaces, in the manufacture of fireproof walls and doors, and in naval construction, with various advantages over prior art materials.

REFERENCES:
patent: 2837873 (1958-06-01), Lynsavage
patent: 4186021 (1980-01-01), Chyung et al.
patent: 4591537 (1986-05-01), Aldinger et al.
Taylor K. M. et al. "Some Properties of Aluminum Nitride" J. of Electrochem Soc. Apr. 1960 pp. 308-314.

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