Alumina sintered products and process for their production

Details Alumina sintered products and process for their production Alumina sintered products and process for their production

1979-11-27

1982-05-25

Bell, Mark

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

51309, 501152, 501153, C04B 3564, C04B 3550, C04B 3544

Patent

active

043316271

ABSTRACT:
A process for producing an alumina sintered product is disclosed wherein the starting alumina mixture contains about 0.01 to 0.55% by weight of MgO and 0.5 to 5.5% by weight of Y.sub.2 O.sub.3. The process yields a sintered product having a porosity on the order of less than 0.1% by volume and an average crystal grain size of about 2 microns or less and is particularly suitable for use in high speed microfinish cutting.

REFERENCES:
patent: 2695628 (1954-11-01), Wheildon
patent: 3141786 (1964-07-01), Bugosh
patent: 3377176 (1968-04-01), Wolkodoff et al.
patent: 3886254 (1975-05-01), Tanaka et al.
patent: 3905845 (1975-09-01), Kobayashi et al.
patent: 4063908 (1977-12-01), Ogawa et al.
patent: 4182972 (1980-01-01), Kaneno et al.

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