Aluminous quartz ceramics and method

Details Aluminous quartz ceramics and method Aluminous quartz ceramics and method

1976-07-06

1978-11-21

Vertiz, O. R.

Compositions: coating or plastic

Coating or plastic compositions

Marking

65 30E, C03C 322, C03C 304

Patent

active

041264762

ABSTRACT:
Ceramics comprising a crystal phase composed of a lithium-containing beta-quartz solid solution are treated with a strong acid to selectively remove lithium therefrom by a hydrogen-for-lithium ion exchange process. Heating of the resulting hydrogen-containing crystal phase drives off H.sub.2 O and provides a ceramic product containing a previously unreported hexagonal aluminosilicate crystal phase, denominated aluminous quartz. Stuffed derivatives of aluminous quartz may also be provided.

REFERENCES:
patent: 3252811 (1966-05-01), Beall
patent: 3524748 (1970-08-01), Beall
patent: 3681097 (1972-08-01), Beall et al.
patent: 3834981 (1974-10-01), Grossman et al.
patent: 3977886 (1976-08-01), Muller
patent: 4011091 (1977-03-01), McCollister

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