Phosphate ceramic hard tiles

Details Phosphate ceramic hard tiles Phosphate ceramic hard tiles

1991-12-23

1993-07-06

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Refractory

501101, 501108, 501121, 501142, 501153, 264333, 106638, 106801, C04B 3502, C04B 3504, C04B 3552, B28B 300

Patent

active

052253805

ABSTRACT:
Calcium aluminum magnesium phosphate ceramic hard tiles and processes for them are described. The tiles have a density in excess of about 110 pounds per cubic foot, a curl value less than about 20 mils and a flexural strength of at least about 2500 pounds per square inch. To prepare the hard tiles 100 parts (by wt.) of an aluminum phosphate-phosphoric acid solution is mixed with at least 5 parts magnesium oxide and 50-110 parts wollastonite. If the acid has more than 15% by weight water, then mica or vermiculite is added.

REFERENCES:
patent: 4792359 (1988-12-01), Barrall et al.
patent: 4872912 (1989-10-01), Barrall et al.

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