1. Effects of Some Light Alloying Elements on the Oxidation Behavior of Fe and Ni-Cr Based Alloys During Air Plasma Spraying.
- Author
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Zhensu Zeng, Kuroda, Seiji, Kawakita, Jin, Komatsu, Masayuki, and Era, Hidenori
- Subjects
PLASMA spraying ,CORROSION & anti-corrosives ,EVAPORATION (Chemistry) ,LIGHT metal alloys ,OXIDATION - Abstract
The oxidation behavior of iron binary powders with addition of Si (1, 4 wt.%) and B (1, 3 wt.%) and that of a Ni-Cr based alloy powder with Si (4.3 wt.%), B (3.0 wt.%), and C (0.8 wt.%) additions during atmosphere plasma spray (APS) have been investigated. Analysis of the chemical composition and phases of oxides in the captured in-flight particles and deposited coatings was carried out. The results show that the addition of Si and B to iron effectively reduced the oxygen contents in the coatings, especially during the in-flight period at higher particles temperature. Ni-Cr based alloy powder with Si, B, and C additions reduced the oxidation of the base alloys significantly. Preferential oxidation and subsequent vaporization of Si, B, and C from the surface of the sprayed particles are believed to play a major role in controlling oxidation in the APS process. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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