US2012128526A1PendingUtilityA1

Metallic Bondcoat or Alloy with a High y/y' Transition Temperature and a Component

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Assignee: KULKARNI ANAND APriority: Nov 24, 2010Filed: Nov 24, 2010Published: May 24, 2012
Est. expiryNov 24, 2030(~4.4 yrs left)· nominal 20-yr term from priority
Inventors:Anand A. KulkarniJonathan E. Shipper, Jr.Werner Stamm
F05D 2260/95C22C 19/05C22C 19/03C23C 4/073F01D 5/288C23C 4/12Y02T50/60
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Claims

Abstract

A nickel-based coating or alloy is provided. The coating includes tantalum preferably without rhenium. The coating or alloy has stabilized the formation of phases γ/γ′ at high temperatures leading to a reduction of local stresses. A component is also provided. The substrate of the component includes a nickel-based or cobalt-based superalloy.

Claims

exact text as granted — not AI-modified
1 .- 15 . (canceled) 
     
     
         16 . A nickel-based metallic coating or alloy, comprising:
 the γ and γ′ phases,   wherein the coating or alloy comprises tantalum in a range of between 3.0 wt % to 6.0 wt %.   
     
     
         17 . The nickel-based metallic coating or alloy according to  claim 16 , wherein the tantalum is in the range of between 3.5 wt % and 5.5 wt %. 
     
     
         18 . The nickel-based metallic coating or alloy according to  claim 17 , wherein the tantalum is 4.5 wt %. 
     
     
         19 . The nickel-based metallic coating or alloy according to  claim 16 , wherein an amount of cobalt is in a range between 21 wt %-25 wt %. 
     
     
         20 . The nickel-based metallic coating or alloy according to  claim 19 , wherein the amount of cobalt is in the range of between 22 wt %-23.5 wt %. 
     
     
         21 . The nickel-based metallic coating or alloy according to  claim 20 , wherein the amount of cobalt is 23 wt %. 
     
     
         22 . The nickel-based metallic coating or alloy according to  claim 16 , wherein an amount of chromium is between 18 wt %-22 wt %. 
     
     
         23 . The nickel-based metallic coating or alloy according to  claim 16 , wherein the metallic coating or alloy comprises no yttrium. 
     
     
         24 . The nickel-based metallic coating or alloy according to  claim 16 , wherein an amount of aluminum is between 8 wt %-12 wt %. 
     
     
         25 . The nickel-based metallic coating or alloy according to  claim 16 , wherein an amount of yttrium is between 0.1 wt %-0.7 wt %. 
     
     
         26 . The nickel-based metallic coating or alloy according to  claim 16 , wherein the metallic coating or the alloy comprises no rhenium. 
     
     
         27 . The metallic coating or alloy according to  claim 16 , wherein the metallic coating or the alloy comprises 0.1 wt % to 2 wt % rhenium. 
     
     
         28 . The nickel-based metallic coating or alloy according to  claim 16 , wherein the coating or the alloy is a MCrAl(X) alloy with M=nickel and/or cobalt. 
     
     
         29 . The nickel-based metallic coating or alloy according to  claim 16 , wherein the coating or alloy includes a higher γ′/γ transition compared to an NiCoCrAl(X) alloy or a coating with rhenium and without tantalum. 
     
     
         30 . The nickel-based metallic coating or alloy according to  claim 16 , wherein the coating or alloy comprises no silicon, and/or no hafnium, and/or no zirconium, and/or no tungsten, and/or no platinum, and/or no melting depressant. 
     
     
         31 . The nickel-based metallic coating or alloy according to  claim 16 , wherein the coating or alloy comprises the β-phase, at least 5 vol %. 
     
     
         32 . The nickel-based metallic coating or alloy according  claim 16 , wherein the coating or alloy consists of nickel, cobalt, aluminum, chromium, and tantalum. 
     
     
         33 . The nickel-based metallic coating or alloy according  claim 32 , wherein the coating or alloy further consists of yttrium. 
     
     
         34 . The nickel-based metallic coating or alloy according to  claim 16 , wherein the coating or alloy comprises no iron. 
     
     
         35 . A component, comprising:
 a nickel-based coating, comprising:
 the γ and γ′ phases, 
   wherein the coating or alloy comprises tantalum in a range of between 3.0 wt % to 6.0 wt %.

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