Ag–Cu Bimetallic Nanoparticles with Enhanced Resistance to Oxidation: A Combined Experimental and Theoretical Study

2014 ◽  
Vol 118 (45) ◽  
pp. 26324-26331 ◽  
Author(s):  
Na Rae Kim ◽  
Kihyun Shin ◽  
Inyu Jung ◽  
Moonsub Shim ◽  
Hyuck Mo Lee
Keyword(s):  
Theoretical Study ◽  
Bimetallic Nanoparticles ◽  
Enhanced Resistance ◽  
Resistance To Oxidation

Structure–property–activity correlations of Pt-bimetallic nanoparticles: A theoretical study

2013 ◽  
Vol 88 ◽  
pp. 604-613 ◽  
Author(s):  
Qingying Jia ◽  
Carlo U. Segre ◽  
David Ramaker ◽  
Keegan Caldwell ◽  
Matthew Trahan ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Bimetallic Nanoparticles ◽  
Structure Property

The oxidation of Inconel alloy MA754 at low oxidation potential

1983 ◽  
Vol 41 ◽  
pp. 218-219
Author(s):  
D. N. Braski ◽  
P. D. Goodell ◽  
J. V. Cathcart ◽  
R. H. Kane
Keyword(s):  
Surface Layer ◽  
Oxidation Potential ◽  
Metal Interface ◽  
Elevated Temperature Strength ◽  
Surface Conditions ◽  
Inconel Alloy ◽  
Inco Alloy ◽  
Resistance To Oxidation ◽  
Oxide Particles ◽  
Cold Worked

It has been known for some time that the addition of small oxide particles to an 80 Ni—20 Cr alloy not only increases its elevated-temperature strength, but also markedly improves its resistance to oxidation. The mechanism by which the oxide dispersoid enhances the oxidation resistance is being studied collaboratively by ORNL and INCO Alloy Products Company.Initial experiments were performed using INCONEL alloy MA754, which is nominally: 78 Ni, 20 Cr, 0.05 C, 0.3 Al, 0.5 Ti, 1.0 Fe, and 0.6 Y2O3 (wt %).Small disks (3 mm diam × 0.38 mm thick) were cut from MA754 plate stock and prepared with two different surface conditions. The first was prepared by mechanically polishing one side of a disk through 0.5 μm diamond on a syntron polisher while the second used an additional sulfuric acid-methanol electropolishing treatment to remove the cold-worked surface layer. Disks having both surface treatments were oxidized in a radiantly heated furnace for 30 s at 1000°C. Three different environments were investigated: hydrogen with nominal dew points of 0°C, —25°C, and —55°C. The oxide particles and films were examined in TEM by using extraction replicas (carbon) and by backpolishing to the oxide/metal interface. The particles were analyzed by EDS and SAD.

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