Ni base alloy

Abstract

A nickel-base alloy comprising, by mass, at least 29% but less than 42% chromium, more than 1 and not more than 3% tantalum, 0.001 to 0.05% magnesium, 0.001 to 0.04% nitrogen and 0.05 to 0.5% manganese, with the balance being nickel and inadvertent impurities. A nickel-base alloy comprising, by mass, more than 43% and not more than 50% chromium, 0.1 to 2% molybdenum, 0.001 to 0.05% magnesium, 0.001 to 0.04% nitrogen, and 0.05 to 0.5% manganese, with the balance being nickel and inadvertent impurities. The amount of carbon included as inadvertent impurities is not more than 0.05%.

1 . A nickel-base alloy comprising, by mass, at least 29% but less than 42% chromium, more than 1% and not more than 3% tantalum, 0.001 to 0.05% magnesium, 0.001 to 0.04% nitrogen and 0.05 to 0.5% manganese, with the balance being nickel and inadvertent impurities, the amount of carbon included in the alloy as inadvertent impurities being not more than 0.05%.  
   
   
       2 . A nickel-base alloy comprising, by mass, at least 29% but less than 42% chromium, more than 1% and not more than 3% tantalum, 0.001 to 0.05% magnesium, 0.001 to 0.04% nitrogen, 0.05 to 0.5% manganese and 0.1 to 2% molybdenum, with the balance being nickel and inadvertent impurities, the amount of carbon included in the alloy as inadvertent impurities being not more than 0.05%.  
   
   
       3 . A nickel-base alloy comprising, by mass, at least 29% but less than 42% chromium, more than 1% and not more than 3% tantalum, 0.001 to 0.05% magnesium, 0.001 to 0.04% nitrogen, 0.05 to 0.5% manganese, and one or both of 0.05 to 1.0% iron and 0.01 to 0.1% silicon, with the balance being nickel and inadvertent impurities, the amount of carbon included in the alloy as inadvertent impurities being not more than 0.05%.  
   
   
       4 . A nickel-base alloy comprising, by mass, at least 29% but less than 42% chromium, more than 1% and not more than 3% tantalum, 0.001 to 0.05% magnesium, 0.001 to 0.04% nitrogen, 0.05 to 0.5% manganese, 0.1 to 2% molybdenum, and one or both of 0.05 to 1.0% iron and 0.01 to 0.1% silicon, with the balance being nickel and inadvertent impurities, the amount of carbon included in the alloy as inadvertent impurities being not more than 0.05%.  
   
   
       5 . A structural member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 1 .  
   
   
       6 . A manifold member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 1 .  
   
   
       7 . A pipe member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 1 .  
   
   
       8 . A fastener member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 1 .  
   
   
       9 . A support plate member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 1 .  
   
   
       10 . A separator member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 1 .  
   
   
       11 . A nickel-base alloy comprising, by mass, more than 43% and not more than 50% chromium, 0.1 to 2% molybdenum, 0.001 to 0.05% magnesium, 0.001 to 0.04% nitrogen, and 0.05 to 0.5% manganese, with the balance being nickel and inadvertent impurities, the amount of carbon included in the alloy as inadvertent impurities being not more than 0.05%.  
   
   
       12 . A nickel-base alloy comprising, by mass, more than 43% and not more than 50% chromium, 0.1 to 2% molybdenum, 0.001 to 0.05% magnesium, 0.001 to 0.04% nitrogen, 0.05 to 0.5% manganese, and one or both of 0.05 to 1.0% iron and 0.01 to 0.1% silicon, with the balance being nickel and inadvertent impurities, the amount of carbon included in the alloy as inadvertent impurities being not more than 0.05%.  
   
   
       13 . A structural member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 11 .  
   
   
       14 . A manifold member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 11 .  
   
   
       15 . A pipe member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 11 .  
   
   
       16 . A fastener member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 11 .  
   
   
       17 . A support plate member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 11 .  
   
   
       18 . A separator member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 11 .  
   
   
       19 . A structural member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 2 .  
   
   
       20 . A structural member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 3 .  
   
   
       21 . A structural member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 4 .  
   
   
       22 . A manifold member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 2 .  
   
   
       23 . A manifold member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 3 .  
   
   
       24 . A manifold member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 4 .  
   
   
       25 . A pipe member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 2 .  
   
   
       26 . A pipe member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 3 .  
   
   
       27 . A pipe member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 4 .  
   
   
       28 . A fastener member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 2 .  
   
   
       29 . A fastener member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 3 .  
   
   
       30 . A fastener member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 4 .  
   
   
       31 . A support plate member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 2 .  
   
   
       32 . A support plate member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 3 .  
   
   
       33 . A support plate member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 4 .  
   
   
       34 . A separator member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 2 .  
   
   
       35 . A separator member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 3 .  
   
   
       36 . A separator member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 4 .  
   
   
       37 . A structural member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 12 .  
   
   
       38 . A manifold member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 12 .  
   
   
       39 . A pipe member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 12 .  
   
   
       40 . A fastener member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 12 .  
   
   
       41 . A support plate member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 12 .  
   
   
       42 . A separator member for a polymer electrolyte fuel cell, which member is made of the nickel-base alloy according to  claim 12.