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Erschienen in: Metal Science and Heat Treatment 7-8/2014

01.11.2014 | Refractory Alloys

Selective High-Temperature Oxidation of Phases in a Cast Refractory Alloy of the 25Cr – 35Ni – Si – Nb – C System

verfasst von: G. P. Anastasiadi, S. Yu. Kondrat’ev, A. I. Rudskoy

Erschienen in: Metal Science and Heat Treatment | Ausgabe 7-8/2014

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Abstract

The process of oxidation of alloy 0.45C – 26Cr – 33Ni – 2Si – 2Nb at a temperature of 400 – 1150°C in air and in vacuum (133 × 10 – 2 Pa) is studied. The content of oxygen on the surface of different phases in the structure of the alloy is determined experimentally after a high-temperature hold of different duration. The oxidation of the alloy is shown to be selective due to differences in the chemical composition of the phases in its structure. It is shown that alloys of the 25Cr – 35Ni – Si – Nb – C system are highly resistant to oxidation, which is explained by the contribution of the matrix γ-phase and chromium carbides.

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Metadaten
Titel
Selective High-Temperature Oxidation of Phases in a Cast Refractory Alloy of the 25Cr – 35Ni – Si – Nb – C System
verfasst von
G. P. Anastasiadi
S. Yu. Kondrat’ev
A. I. Rudskoy
Publikationsdatum
01.11.2014
Verlag
Springer US
Erschienen in
Metal Science and Heat Treatment / Ausgabe 7-8/2014
Print ISSN: 0026-0673
Elektronische ISSN: 1573-8973
DOI
https://doi.org/10.1007/s11041-014-9770-5

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