US2013272917A1PendingUtilityA1

Metallic bondcoat or alloy with a high gamma/gamma' transition temperature and a component

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Individually held — no corporate assignee on recordPriority: Nov 24, 2010Filed: Nov 7, 2011Published: Oct 17, 2013
Est. expiryNov 24, 2030(~4.3 yrs left)· nominal 20-yr term from priority
Inventors:Anand A. KulkarniJonathan E. Shipper, Jr.Werner Stamm
Y02T50/60C22C 19/05C23C 4/073F05D 2260/95F01D 5/288C22C 19/03C23C 4/12
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Claims

Abstract

A metallic bondcoat with phases of γ and γ′ is provided. The metallic coating or alloy is nickel based. The metallic coating or alloy has γ and γ′ phases and optionally has β-phase. The new addition in nickel based coating stabilizes the phases γ and γ′ at high temperatures leading to a reduction of local stresses.

Claims

exact text as granted — not AI-modified
1 .- 15 . (canceled) 
     
     
         16 . A metallic coating or alloy that is nickel based comprising γ and γ′ phases and/or β-phase, comprising:
 a tantalum that is in a range between 3.0 wt % to 6.0 wt %, or is in a range between 3.5 wt % to 5.5 wt %, or is 4.5 wt %. 
 
     
     
         17 . The metallic coating or alloy according to  claim 16 , wherein amount of cobalt is in a range between 21 wt % to 25 wt %, or is in a range between 22 wt % to 23.5 wt %, or is 23 wt %. 
     
     
         18 . The metallic coating or alloy according to  claim 16 , wherein amount of chromium is in a range between 18 wt % to 22 wt %, or is in a range between 19 wt % to 21 wt %, or is 20 wt %. 
     
     
         19 . The metallic coating or alloy according to  claim 16 , wherein the metallic coating or alloy comprises no Yttrium. 
     
     
         20 . The metallic coating or alloy according to  claim 16 , wherein amount of aluminum is in a range between 8 wt % to 12 wt %, or is in a range between 9 wt % to 11 wt %, or is 10 wt %. 
     
     
         21 . The metallic coating or alloy according to  claim 16 , wherein amount of yttrium is in a range between 0.1 wt % to 0.7 wt %. 
     
     
         22 . The metallic coating or alloy according to  claim 16 , wherein the metallic coating or alloy comprises no rhenium. 
     
     
         23 . The metallic coating or alloy according to  claim 16 , wherein the metallic coating or alloy comprises 0.1 wt % to 2 wt % rhenium. 
     
     
         24 . The metallic coating or alloy according to  claim 16 , wherein the metallic coating or alloy is a MCrAl alloy with M=nickel and/or cobalt. 
     
     
         25 . The metallic coating or alloy according to  claim 16 , wherein the metallic coating or alloy has a higher γ′/γ transition compared to a NiCoCrAl alloy or coating with rhenium and without tantalum. 
     
     
         26 . A coating or alloy, comprising:
 a tantalum according to  claim 16 ;   no silicon;   no hafnium;   no zirconium;   no tungsten;   no platinum; and/or   no melting depressant.   
     
     
         27 . The coating or alloy according to  claim 26 , wherein the coating or alloy comprises β-phase that is at least 5 vol %. 
     
     
         28 . The coating or alloy according to  claim 26 , wherein the coating or alloy comprises nickel, cobalt, aluminum, chromium, tantalum and optionally Yttrium. 
     
     
         29 . The coating or alloy according to  claim 26 , wherein the coating or alloy comprises no iron. 
     
     
         30 . A component, comprising:
 a metallic coating according to  claim 16 .

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