Oxygen permeability of Fe-Ni-Cr alloys at 1100 and 1150°C under carbon-free and carbon-containing gases

被引：12

作者：

Jullian, D. ^{[1
]}

Prillieux, A. ^{[1
,2
]}

Zhang, J. ^{[1
]}

Young, D. J. ^{[1
]}

机构：

[1] UNSW Australia, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia

[2] Univ Toulouse, CNRS, ENSIACET, CIRIMAT,INPT,UPS, 4 Allee Emile Monso,BP 44362, F-31030 Toulouse 4, France

来源：

MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2017年 / 68卷 / 02期

基金：

澳大利亚研究理事会;

关键词：

internal oxidation; Wagner's model; oxygen permeability; Fe-Ni-Cr alloys; CO-CO2; Rhines pack; NICKEL-BASE ALLOYS; INTERNAL OXIDATION; HIGH-TEMPERATURE; DIFFUSION; ENVIRONMENTS; SOLUBILITY; IRON;

D O I：

10.1002/maco.201508803

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Wagner's model of internal oxidation allows the prediction of an alloy's critical concentration of oxide forming metal required to achieve a protective oxide scale at high temperatures. The model depends on oxygen permeability in the alloy, but this parameter has not been evaluated for the Fe-Ni system, and the influence of carbon-bearing gases is unknown. Oxygen permeability measurement by internal oxidation of Fe-Ni-Cr alloys, reacted at 1100 and 1150 degrees C is described. Exposures in Rhines packs and flowing CO-CO2 gas mixtures serve to assess the influence of carbon on oxygen permeability at the Fe-FeO equilibrium oxygen potential. Oxygen permeability in Fe-Ni increases with iron content in a non-ideal manner in both gas environments. Higher permeability is found in carbon bearing gases for iron-rich alloys, and the size of this effect increases with temperature.

引用

页码：197 / 204

页数：8

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