Effect of Chromium Content on the Oxidation Behavior of Ni-Cr Model Alloys in Superheated Steam

Fethi Hamdani; Hiroshi Abe; Benoit Ter-Ovanessian; Bernard Normand; Yutaka Watanabe

doi:10.1007/s11661-015-2786-7

Effect of Chromium Content on the Oxidation Behavior of Ni-Cr Model Alloys in Superheated Steam

Fethi Hamdani, Hiroshi Abe, Benoit Ter-Ovanessian, Bernard Normand, Yutaka Watanabe

ENG - Quantum Science and Energy Engineering

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The present study investigated the oxidation behavior of Ni-xCr model alloys (14 ≤ x ≤ 30 wt pct) in steam at 973 K (700 °C), with particular emphasis on the influence of chromium content. Mirror polishing was employed to reduce the hardened layer, thereby avoiding the synergetic effect with dislocations in the subsurface. To elucidate the oxidation behavior, weight gain measurements and the meticulous characterization of the oxide scale were performed. The optimal Cr content (24 wt pct) corresponded to an oxidation rate slower than the parabolic rate due to the growth of a protective Cr oxide layer. Increasing the Cr content above the optimal amount led to the degradation of oxidation resistance.

Original language	English
Pages (from-to)	2285-2293
Number of pages	9
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	46
Issue number	5
DOIs	https://doi.org/10.1007/s11661-015-2786-7
Publication status	Published - 2015 May

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys

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Effect of Chromium Content on the Oxidation Behavior of Ni-Cr Model Alloys in Superheated Steam. / Hamdani, Fethi; Abe, Hiroshi; Ter-Ovanessian, Benoit; Normand, Bernard; Watanabe, Yutaka.

In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 46, No. 5, 05.2015, p. 2285-2293.

Research output: Contribution to journal › Article › peer-review

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