The Oxidation of Nickel-Aluminum and Iron-Aluminum Alloys

1984 ◽  
Vol 39 ◽  
Author(s):  
John V. Cathcart
Keyword(s):  
Oxidation Behavior ◽  
Void Formation ◽  
Al Alloys ◽  
Nickel Aluminum ◽  
Temperature Oxidation ◽  
Al Content ◽  
Iron Aluminum ◽  
Ordered Alloys ◽  
High Temperature Oxidation Behavior ◽  
Iron Aluminum Alloys

ABSTRACTThe high-temperature oxidation behavior of several ordered alloys in the Ni-Al and Fe-Al systems is reviewed with special emphasis on Ni3Al and NiAl. Ordering influences oxidation through its effect on the activities of the alloy components and by changing the point defect concentration in an alloy. Three categories of Ni-Al alloys are distinguished based on Al content and oxidation behavior. A characteristic feature of the oxidation of high-aluminum Ni-Al and Fe-Al alloys is the formation of voids in the substrate at the oxide-metal interface. The mechanism of void formation and its suppression by minor additions of oxygen-active elements is discussed. A brief description of the effect of preoxidation on the reactions of Ni3Al-base alloys in SO2/O2 environments is also included.

Influence of the Third Element on the High Temperature Oxidation Behavior of γ'-Ni3Al Alloys

2006 ◽  
Vol 522-523 ◽  
pp. 617-624 ◽  
Author(s):  
Shinya Mikuni ◽  
Shigenari Hayashi ◽  
Toshio Narita
Keyword(s):  
High Temperature ◽  
High Temperature Oxidation ◽  
Oxidation Behavior ◽  
Al Alloys ◽  
Temperature Oxidation ◽  
The Third ◽  
Alloy Oxidation ◽  
Oxidation Performance ◽  
Fe Alloys ◽  
High Temperature Oxidation Behavior

The effects of the third element on the high temperature oxidation of γ'-Ni3Al with 5at%X (X=Ti, Ta, Nb, Cu, Co and Fe) alloys were investigated at 1173K in air, and oxidation behavior could be classified into three groups. The first group, comprised of alloys with Cu and Co, showed good oxidation performance with Al2O3 formation. A second group contains Ti, Ta, and Nb as alloying elements, and showed poor oxidation performance. With Fe or Mn addition the alloy oxidation performance was intermediate between the first and second group. The effects of these elements are discussed associate with partitioning factors for each element in the γ'-phase.

High-temperature oxidation behavior of Mo–Si–B-based and Co–Re–Cr-based alloys

2014 ◽  
Vol 48 ◽  
pp. 34-43 ◽  
Author(s):  
B. Gorr ◽  
L. Wang ◽  
S. Burk ◽  
M. Azim ◽  
S. Majumdar ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Oxidation ◽  
Oxidation Behavior ◽  
Temperature Oxidation ◽  
High Temperature Oxidation Behavior
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