Oxidation behavior and thermal stability of a NiAl–V eutectic alloy. Issue 5 (12th February 2013)

• Record Type: Journal Article
• Authors: Milenkovic, Srdjan; Caram, Rubens
• Is Part Of: Physica status solidi. Volume 210:Issue 5(2013:May)
• Page Start: 1019
• Page End: 1024
• Publication Date: 2013-02-12
• Subjects: Solid state physics -- Periodicals; Solids -- Industrial applications -- Periodicals; 530.41
• DOI: 10.1002/pssa.201200836
• Languages: English
• ISSNs: 1862-6300

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <sec id="pssa201200836-sec-0001" sec-type="section"> <p>Oxidation behavior and thermal stability of a NiAl–V alloy with eutectic composition processed by directional solidification technique has been investigated. The surface analysis at the elevated temperature indicated that the investigated microstructures are stable at the isothermal conditions and an inert atmosphere. The oxidation testing in the synthetic air showed that the temperature of 400 °C is critical. In addition, the oxidation of the NiAl–V eutectic alloy is characterized by: (a) alteration of composition immediately below the surface substrate/oxide; (b) formation of the oxide layer rich in V, adherent to the substrate; and (c) formation of external oxide layer that presents oxide mixture formed by vanadium, nickel, and aluminum. <inline-graphic xlink:href="ark:/27927/pgg20q11vrc" content-type="pssa201200836-gra-0001" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></p> <p>Microstructure of the substrate/oxide interface of NiAl–V alloy oxidized at 900 °C for 24 h.</p> </sec> </abstract>