Alumina sintered body and method for producing the same

Details Alumina sintered body and method for producing the same Alumina sintered body and method for producing the same

2007-01-30

2007-01-30

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

Refractory

C501S080000, C204S429000

Reexamination Certificate

active

10997277

ABSTRACT:
An alumina sintered body having communicating pores of 400–1100 Å in average pore diameter and 4–16% in porosity and being obtainable by mixing first alumina particles 1 having a particle diameter of 0.2–0.7 μm and a sphericity of 0.7–1.0 as an aggregate and second alumina particles having a particle diameter of 0.01–0.1 μm as a pore forming material to embed a plurality of the second alumina particles2in the spaces between the first alumina particles1, and sintering the mixture at a temperature of 1200–1400° C. The alumina sintered body can be used for a part for various gas permeable industrial materials inclusive of protective film for gas sensors, and the like.

REFERENCES:
patent: 2005/0126910 (2005-06-01), Sakon et al.
patent: 09-068515 (1997-03-01), None

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