US2007059550A1PendingUtilityA1

Nickel based superalloy

31
Individually held — no corporate assignee on recordPriority: Jun 28, 2005Filed: Jun 5, 2006Published: Mar 15, 2007
Est. expiryJun 28, 2025(expired)· nominal 20-yr term from priority
Inventors:Colin JonesRobert BroomfieldCatherine Mary Fiona RaeKenneth Grubb
C30B 29/52C22C 19/057C22C 19/00Y10T428/12944C21D 2201/04C22F 1/10F23M 2900/05004F23R 3/007C30B 21/02Y10T428/12611Y10T428/12875
31
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

A nickel based single crystal superalloy comprising 7-9 wt % cobalt, 3.5-4.5 wt % chromium, 0-2.4 wt % molybdenum, 4-8 wt % tungsten, 3.5-6 wt % rhenium, 5-6.5 wt % aluminium, 6.5-8.5 wt % tantalum, 0-0.2 wt % hafnium and the balance nickel plus incidental impurities. The nickel based single crystal superalloy is suitable for use as a gas turbine engine turbine blade or turbine vane. It is of particular us on cooled turbine blades and turbine vanes which have ceramic thermal barrier coatings, because the superalloy is compatible with the ceramic thermal barrier coating to minimise spalling. The superalloy has better mechanical properties than other second-generation single crystal superalloys and has better creep strength and oxidation resistance.

Claims

exact text as granted — not AI-modified
1 . A nickel based single crystal superalloy comprising 7-9 wt % cobalt, 3.5-4.5 wt % chromium, 0-2.4 wt % molybdenum, 4-8 wt % tungsten, 3.5-6 wt % rhenium, 5-6.5 wt % aluminium, 6.5-8.5 wt % tantalum, 0-0.2 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       2 . A nickel based single crystal superalloy as claimed in  claim 1  comprising 7.5-8.5 wt % cobalt, 3.5-4.5 wt % chromium, 0-2.4 wt % molybdenum, 4-7.5 wt % tungsten, 3.5-5.8 wt % rhenium, 5.3-6.3 wt % aluminium, 7-8 wt % tantalum, 0.05-0.15 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       3 . A nickel based single crystal superalloy as claimed in  claim 1  comprising 7-9 wt % cobalt, 3.5-4.5 wt % chromium, 2-2.4 wt % molybdenum, 4-5 wt % tungsten, 3.5-4.5 wt % rhenium, 5-6.5 wt % aluminium, 7-8 wt % tantalum, 0.05-0.15 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       4 . A nickel based single crystal superalloy as claimed in  claim 3  comprising 7.5-8.5 wt % cobalt, 3.5-4.5 wt % chromium, 2-2.4 wt % molybdenum, 4-5 wt % tungsten, 3.5-4.5 wt % rhenium, 5.3-6.3 wt % aluminium, 7-8 wt % tantalum, 0.05-0.15 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       5 . A nickel based single crystal superalloy as claimed in  claim 4  comprising 7.7-8.3 wt % cobalt, 3.7-4.3 wt % chromium, 2-2.4 wt % molybdenum, 4.3-4.9 wt % tungsten, 3.8-4.4 wt % rhenium, 5.5-6.1 wt % aluminium, 7.2-7.8 wt % tantalum, 0.05-0.15 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       6 . A nickel based single crystal superalloy as claimed in  claim 5  comprising 8 wt % cobalt, 4 wt % chromium, 2.2 wt % molybdenum, 4.6 wt % tungsten, 4.1 wt % rhenium, 5.8 wt % aluminium, 7.5 wt % tantalum, 0.1 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       7 . A nickel based single crystal superalloy as claimed in  claim 1  comprising 7-9 wt % cobalt, 3.5-4.5 wt % chromium, 6-8 wt % tungsten, 4.8-5.8 wt % rhenium, 5-6.5 wt % aluminium, 7-8 wt % tantalum, 0.05-0.15 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       8 . A nickel based single crystal superalloy as claimed in  claim 7  comprising 7.5-8.5 wt % cobalt, 3.5-4.5 wt % chromium, 6-8 wt % tungsten, 4.8-5.8 wt % rhenium, 5.3-6.3 wt % aluminium, 7-8 wt % tantalum, 0.05-0.15 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       9 . A nickel based single crystal superalloy as claimed in  claim 8  comprising 7.7-8.3 wt % cobalt, 3.7-4.3 wt % chromium, 6.5-7.5 wt % tungsten, 5.0-5.6 wt % rhenium, 5.5-6.1 wt % aluminium, 7.0-8.0 wt % tantalum, 0.05-0.15 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       10 . A nickel based single crystal superalloy as claimed in  claim 9  comprising 8 wt % cobalt, 4 wt % chromium, 7 wt % tungsten, 5.3 wt % rhenium, 5.8 wt % aluminium, 7.5 wt % tantalum, 0.1 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       11 . A cast single crystal nickel based superalloy article comprising 7-9 wt % cobalt, 3.5-4.5 wt % chromium, 0-2.4 wt % molybdenum, 4-8 wt % tungsten, 3.5-6 wt % rhenium, 5-6.5 wt % aluminium, 6.5-8.5 wt % tantalum, 0-0.2 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       12 . A cast single crystal nickel based superalloy article as claim in  claim 11  comprising 7.5-8.5 wt % cobalt, 3.5-4.5 wt % chromium, 0-2.4 wt % molybdenum, 4-7.5 wt % tungsten, 3.5-5.8 wt % rhenium, 5.3-6.3 wt % aluminium, 7-8 wt % tantalum, 0.05-0.15 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       13 . A cast single crystal nickel based superalloy article as claimed in  claim 11  comprising 7-9 wt % cobalt, 3.5-4.5 wt % chromium, 2-2.4 wt % molybdenum, 4-5 wt % tungsten, 3.5-4.5 wt % rhenium, 5-6.5 wt % aluminium, 7-8 wt % tantalum, 0.05-0.15 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       14 . A cast single crystal nickel based superalloy article as claimed in  claim 13  comprising 7.5-8.5 wt % cobalt, 3.5-4.5 wt % chromium, 2-2.4 wt % molybdenum, 4-5 wt % tungsten, 3.5-4.5 wt % rhenium, 5.3-6.3 wt % aluminium, 7-8 wt % tantalum, 0.05-0.15 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       15 . A cast single crystal nickel based superalloy article as claimed in  claim 14  comprising 7.7-8.3 wt % cobalt, 3.7-4.3 wt % chromium, 2-2.4 wt % molybdenum, 4.3-4.9 wt % tungsten, 3.8-4.4 wt % rhenium, 5.5-6.1 wt % aluminium, 7.2-7.8 wt % tantalum, 0.05-0.15 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       16 . A cast single crystal nickel based superalloy article as claimed in  claim 15  comprising 8 wt % cobalt, 4 wt % chromium, 2.2 wt % molybdenum, 4.6 wt % tungsten, 4.1 wt % rhenium, 5.8 wt % aluminium, 7.5 wt % tantalum, 0.1 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       17 . A cast single crystal nickel based superalloy article as claimed in  claim 11  comprising 7-9 wt % cobalt, 3.5-4.5 wt % chromium, 6-8 wt % tungsten, 4.8-5.8 wt % rhenium, 5-6.5 wt % aluminium, 7-8 wt % tantalum, 0.05-0.15 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       18 . A cast single crystal nickel based superalloy article as claimed in  claim 17  comprising 7.5-8.5 wt % cobalt, 3.5-4.5 wt % chromium, 6-8 wt % tungsten, 4.8-5.8 wt % rhenium, 5.3-6.3 wt % aluminium, 7-8 wt % tantalum, 0.05-0.15 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       19 . A cast single crystal nickel based superalloy article as claimed in  claim 18  comprising 7.7-8.3 wt % cobalt, 3.7-4.3 wt % chromium, 6.5-7.5 wt % tungsten, 5.0-5.6 wt % rhenium, 5.5-6.1 wt % aluminium, 7.0-8.0 wt % tantalum, 0.05-0.15 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       20 . A cast single crystal nickel based superalloy article as claimed in  claim 19  comprising 8 wt % cobalt, 4 wt % chromium, 7 wt % tungsten, 5.3 wt % rhenium, 5.8 wt % aluminium, 7.5 wt % tantalum, 0.1 wt % hafnium, and the balance nickel plus incidental impurities.  
   
   
       21 . A cast single crystal nickel based superalloy article as claimed in  claim 11  wherein the article comprises a turbine blade, a turbine vane or a combustor component.  
   
   
       22 . A cast single crystal nickel based superalloy article as claimed in  claim 21  wherein the article comprises at least one internal passage for the flow of cooling fluid.  
   
   
       23 . A cast single crystal nickel based superalloy article as claimed in  claim 21  wherein the article comprises a bond coating on the article and a ceramic thermal barrier coating on the bond coating.  
   
   
       24 . A cast single crystal nickel based superalloy article as claimed in  claim 23  wherein the bond coating comprises a layer of alumina.  
   
   
       25 . A cast single crystal nickel based superalloy article as claimed in  claim 23  wherein the bond coating comprises a layer comprising platinum enriched gamma prime phase and platinum enriched gamma phase.  
   
   
       26 . A nickel based single crystal superalloy comprising 7.8-8.2 wt % cobalt, 3.8-4.2 wt % chromium, 6.8-7.2 wt % tungsten, 5.1-5.5 wt % rhenium, 5.6-6.0 wt % aluminium, 7.7-7.9 wt % tantalum, 0.05-0.15 wt % hafnium and the balance nickel plus incidental impurities.  
   
   
       27 . A cast single crystal nickel based superalloy article comprising 7.8-8.2 wt % cobalt, 3.8-4.2 wt % chromium, 6.8-7.2 wt % tungsten, 5.1-5.5 wt % rhenium, 5.6-6.0 wt % aluminium, 7.7-7.9 wt % tantalum, 0.05-0.15 wt % hafnium and the balance nickel plus incidental impurities.

Join the waitlist — get patent alerts

Track US2007059550A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.