High density alumina zirconia ceramics and a process for production thereof
CA 1259080 A · Owner: Nippon Soda Co. Ltd. · Inventors: Morishita, Junichi; Kimura, Nobuo; Okamura, Hiromichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the present invention there is provided a high density alumina zirconia ceramic body the composition of which comprises greater than 60 mole % and less than 99 mole % .alpha.-alumina; greater than 1 mole % and less than 40 mole % zirconia containing more than 65% of tetragonal phase; and transition metal oxide(s); the atomic ratio of the transition metal(s) to the combination of aluminium and zirconium being from 0.01% to 1%. This ceramic body is very strong, very tough and very hard so that it can be used for mechanical members, abrasion resistant materials cutting tools and the like. The ceramic body of the invention can be produced by sintering a combined powder prepared from a …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted September 5, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 5, 2006.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.