Process for producing high strength alumina

Details Process for producing high strength alumina Process for producing high strength alumina

1994-03-14

1995-08-22

Fiorilla, Christopher A.

Plastic and nonmetallic article shaping or treating: processes

Vacuum treatment of work

To degas or prevent gas entrapment

264125, B28B 300

Patent

active

054437733

ABSTRACT:
A vacuum hot pressed alumina material having small, isometric grains; a uniform distribution thereof; relatively low, predominantly transgranular porosity; and a density approaching the theoretical density of pure alumina produced by vacuum hot pressing alumina powder which contains at least 98.0% alumina, is substantially free of any sintering aids or any other additives, and has a median particle size less than about 3 microns, in a vacuum hot press operated at a temperature of at least about 1350.degree. C. and a pressure of at least 28 MPa (3500 PSI) for a sintering period of at least 1.5 hours. The vacuum hot pressed alumina material also has compressive strength, flexural strength, impact strength, and wear resistance superior to that for most conventional sintered alumina materials.

REFERENCES:
patent: 5081082 (1992-01-01), Hai-Doo et al.
patent: 5242298 (1993-09-01), Sernetz

Affiliated with

Also associated with

Rating

Process for producing high strength alumina does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing high strength alumina, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing high strength alumina will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2139761