Hydrothermal process for preparing zirconia-alumina base ultra-f

Details Hydrothermal process for preparing zirconia-alumina base ultra-f Hydrothermal process for preparing zirconia-alumina base ultra-f

1987-05-04

1988-09-06

Capella, Steven

Compositions: ceramic

Ceramic compositions

Refractory

501103, 423 211, 423 71, 423 81, 423115, 423 85, 423123, 2523157, C04B 3510, C04B 3548

Patent

active

047693517

ABSTRACT:
A process for preparing a zirconia-alumina base composite ultra-fine powder is described, including the steps of: mixing an aluminum salt or an alumina hydrate with an aqueous zirconium oxychloride solution, with or without metal salt acting as a stabilizer; mixing urea or a substance capable of generating ammonia by hydrolysis with the resulting mixture; and allowing the mixture to react at a temperature of 140.degree. to 300.degree. C. and a pressure of 4 to 150 kg/cm.sup.2 in a high-temperature and -pressure vessel. The reaction product is further dried, calcined and crushed to obtain an ultra-fine powder.

REFERENCES:
patent: 4314827 (1982-02-01), Leithauser et al.
patent: 4605631 (1986-08-01), Rossi
patent: 4619817 (1986-10-01), Stambaugh et al.

Affiliated with

Also associated with

Rating

Hydrothermal process for preparing zirconia-alumina base ultra-f does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydrothermal process for preparing zirconia-alumina base ultra-f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrothermal process for preparing zirconia-alumina base ultra-f will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1606815