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

被引：19

作者：

Hamdani, Fethi ^{[1
,2
]}

Abe, Hiroshi ^{[3
]}

Ter-Ovanessian, Benoit ^{[1
]}

Normand, Bernard ^{[1
]}

Watanabe, Yutaka ^{[3
]}

机构：

[1] INSA Lyon, MATEIS CNRS UMR5510, F-69621 Villeurbanne, France

[2] Tohoku Univ, Grad Sch Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

[3] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 9808579, Japan

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2015年 / 46A卷 / 05期

关键词：

HIGH-TEMPERATURE STEAM; STAINLESS-STEELS; SURFACE PREPARATION; WATER; CORROSION; WORKING;

D O I：

10.1007/s11661-015-2786-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present study investigated the oxidation behavior of Ni-xCr model alloys (14 <= x <= 30 wt pct) in steam at 973 K (700 degrees 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. (C) The Minerals, Metals & Materials Society and ASM International 2015

引用

页码：2285 / 2293

页数：9

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