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:
Aug. 21, 2012
Filed:
Nov. 21, 2008
Bernard Patrick Bewlay, Niskayuna, NY (US);
Pazhayannur Ramanathan Subramanian, Niskayuna, NY (US);
Joseph David Rigney, Milford, OH (US);
Richard Didomizio, Scotia, NY (US);
Voramon Supatarawanich Dheeradhada, Latham, NY (US);
Bernard Patrick Bewlay, Niskayuna, NY (US);
Pazhayannur Ramanathan Subramanian, Niskayuna, NY (US);
Joseph David Rigney, Milford, OH (US);
Richard DiDomizio, Scotia, NY (US);
Voramon Supatarawanich Dheeradhada, Latham, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
Coatings suitable for use as protective oxide-forming coatings on Nb-based substrates exposed to high temperatures and oxidative environments. The coatings contain chromium and/or molybdenum, preferably contains silicon, and optionally contains niobium, titanium, hafnium, iron, rhenium, tantalum, and/or tungsten, which in combination form multiple intermetallic phases, which in combination form one or more intermetallic phases that promote the formation of a slow-growing oxide scale. Depending on the particular coating composition, the intermetallic phases may be: a silicon-modified CrNb Laves phase and optionally a chromium solid solution phase, a CrNbSi intermetallic phase, and/or an MSi intermetallic phase where M is niobium, titanium, and/or chromium; or MSi, MSiand/or MSiwhere M is molybdenum, niobium, titanium, chromium, hafnium, iron, rhenium, tantalum, and/or tungsten.