CLOSE-ROASTED CERAMICS AND METHOD OF PREPARING THEREOF Russian patent published in 1996 - IPC

Abstract RU 2070181 C1

FIELD: manufacture of ceramic materials. SUBSTANCE: close-roasted β- quartz ceramics has 76.4-99.9 wt % b-quartz and 0.1-23.6 wt % aluminium nitride. To obtain such ceramics, a blend is first prepared followed by shaping of intermediate products and their thermal treatment at temperatures above 1500 C and subsequent cooling. Shaping is performed from a mixture of powders containing b-quartz and aluminium nitride taken in proportion from 999:1 to 68:21. Ceramics thus prepared is characterized by elevated heat resistance, mechanical strength, and reduced specific volume. EFFECT: improved performance of material. 2 cl, 1 tbl

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RU 2 070 181 C1

Authors

Lisov M.F.

Dates

1996-12-10Published

1991-07-01Filed