Journal
CORROSION SCIENCE
Volume 51, Issue 3, Pages 511-517Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2008.10.023
Keywords
Alloy; Nickel; Oxidation
Funding
- National Natural Scientific Foundation of China (NSFC) [50571107, 50671114]
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The oxidation of four Ni-10Cr-ySi-4Al alloys was studied at 1100 degrees C to examine the effects of Si additions (from 2 to 6 at.%) on the behavior of the alloy Ni-10Cr-4Al. Addition of 2 at.% Si prevented completely nickel oxidation, but could not form alumina scales. Larger Si additions produced alumina only over part of the alloy surface (about 20% with 4 at.% Si and 30% with 6 at.% Si), but could not prevent completely the internal oxidation of Al. The results are interpreted by extending to quaternary alloys the mechanism of the third-element effect already proposed for ternary alloys. (C) 2008 Elsevier Ltd. All rights reserved.
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