High-strength alumina sintered body and process for preparation

Details High-strength alumina sintered body and process for preparation High-strength alumina sintered body and process for preparation

1988-12-20

1992-01-21

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501103, 501153, C04B 3548

Patent

active

050828096

ABSTRACT:
Disclosed is a high-strength alumina sintered body which consists of 1 to 30% by weight, based on Al.sub.2 O.sub.3 and ZrO.sub.2, of ZrO.sub.2 and 99 to 70% by weight, based on Al.sub.2 O.sub.3 and ZrO.sub.2, of Al.sub.2 O.sub.3, and unavoidable impurities, said sintered body having a peak based on ZrO.sub.2 at a position of a wave body having a peak based on ZrO.sub.2 at a position of a wave number of 600.+-.10 cm.sup.-1 in a measurement chart of the laser Raman spectrum analysis. This sintered body has a high flexural strength and a high breaking toughness in combination.

REFERENCES:
patent: 3247000 (1966-04-01), Taylor
patent: 4656145 (1987-04-01), Soroi
patent: 4829028 (1988-05-01), Seki et al.
patent: 4849142 (1989-07-01), Panda et al.
patent: 4880757 (1989-11-01), Henslee et al.

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