The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 01, 2011
Filed:
Feb. 07, 2008
Prasad Shrikrishna Apte, East Amherst, NY (US);
James Patrick Meagher, Buffalo, NY (US);
Shawn W. Callahan, Tonawanda, NY (US);
Prasad Shrikrishna Apte, East Amherst, NY (US);
James Patrick Meagher, Buffalo, NY (US);
Shawn W. Callahan, Tonawanda, NY (US);
Praxair S. T. Technology, Inc., North Haven, CT (US);
Abstract
This invention relates to coatings for a metal or non-metal substrate comprising (i) a thermal sprayed bondcoat layer applied to the substrate, and (ii) a thermal sprayed ceramic layer applied to the bondcoat layer; wherein said coating has a helium leak rate of less than 6×10standard cubic centimeters per second. The thermal sprayed bondcoat layer comprises an alloy of MCrAlM' wherein M is an element selected from nickel, cobalt, iron and mixtures thereof, and M′ is an element selected from yttrium, zirconium, hafnium, ytterbium and mixtures thereof. The alloy is thermally sprayed from a powder having a mean particle size of 50 percentile point in distribution of from about 5 microns to about 100 microns. The coatings are useful for extending the service life under severe conditions, such as those associated with metallurgical vessels' lances, nozzles and tuyeres.