Zirconium nitride coated article and method for making same
CA 1302807 C · Owner: Union Carbide Corporation · Inventors: Troue, Harden Henry; Sue, Jiinjen Albert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract Of The Invention An erosion resistant article such as a turbine blade having, in use, a surface subject to high angle impingement and a surface subject to low angle impingement, said article comprising a substrate defining said surfaces composed of a refractory metal titanium alloy, refractory alloy, aluminum alloy superalloy based on Fe, Co or Ni, stainless steel or ceramic composite, and an erosion-resistant coating of zirconium nitride having an average grain size of not greater than about 3000 Angstroms applied by physical vapor deposition to said surfaces, said zirconium nitride coating preferably having a ratio of the erosion rate at an impingement angle of 90° to the erosion …
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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 June 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.