Effects of Water Vapour on the Oxidation of Chromia Formers

被引：49

作者：

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

机构：

[1] Univ New S Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia

来源：

HIGH TEMPERATURE CORROSION AND PROTECTION OF MATERIALS 7, PTS 1 AND 2 | 2008年 / 595-598卷

关键词：

oxidation; chromium; volatilisation; diffusion; hydrogen doping;

D O I：

10.4028/www.scientific.net/MSF.595-598.1189

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Water vapour interacts with growing chromia scales in several different ways. Formation and volatilisation of Cr2O2(OH)(2) is shown to account quantitatively for chromium loss from thin alloy foils reacted with air-steam mixtures over periods of 103 h. In the shorter term, water vapour is shown to refine the grain structure of Cr2O3 scales grown on Ni-25Cr. Scaling kinetics are at the same time accelerated by an additional, larger contribution to diffusion by a grain boundary species, either OH- or H2O. A slight increase in scaling rate observed at low water vapour partial pressures in H-2/H2O gases is thought to be due to hydrogen doping.

引用

页码：1189 / 1197

页数：9

共 33 条

[1] REACTIONS OF FE-CR AND NI-CR ALLOYS IN CO/CO2 GASES AT 850 AND 950-DEGREES-C [J].

COLWELL, JA ;

RAPP, RA .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1986, 17 (06) :1065-1074

[2] International workshop on high-temperature corrosion [J].

Douglass, DL ;

Kofstad, P ;

Rahmel, A ;

Wood, GC .

OXIDATION OF METALS, 1996, 45 (5-6) :529-620

[3] OXIDE STRUCTURES PRODUCED ON IRON-CHROMIUM ALLOYS BY A DISSOCIATIVE MECHANISM [J].

FUJII, CT ;

MEUSSNER, RA .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1963, 110 (12) :1195-1204

[4] THE MECHANISM OF THE HIGH-TEMPERATURE OXIDATION OF IRON-CHROMIUM ALLOYS IN WATER VAPOR [J].

FUJII, CT ;

MEUSSNER, RA .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1964, 111 (11) :1215-1221

[5] The kinetic behaviour of metals in water vapour at high temperatures: Can general rules be proposed? [J].

Galerie, A ;

Wouters, Y ;

Caillet, M .

HIGH TEMPERATURE CORROSION AND PROTECTION OF MATERIALS 5, PTS 1 AND 2, 2001, 369-3 :231-238

[6] CORROSION OF METALS AND ALLOYS IN MIXED GAS ENVIRONMENTS AT ELEVATED-TEMPERATURES [J].

GIGGINS, CS ;

PETTIT, FS .

OXIDATION OF METALS, 1980, 14 (05) :363-413

[7] EFFECT OF INTERNAL STABLE NITRIDE AND OXIDE DISPERSION ON HIGH-TEMPERATURE OXIDATION OF FE-CR ALLOYS [J].

GONCEL, OT ;

STRINGER, J ;

WHITTLE, DP .

CORROSION SCIENCE, 1978, 18 (08) :701-&

[8]

Hagel W.C., 1963, T AM SOC METAL, V56, P583

[9] Hydrogen in chromium:: Influence on the high-temperature oxidation kinetics in H2O, oxide-growth mechanisms, and scale adherence [J].

Hultquist, G ;

Tveten, B ;

Hörnlund, E .

OXIDATION OF METALS, 2000, 54 (1-2) :1-10

[10]

Kofstad P., 1988, Elsevier Appl. Sci., V24, DOI [10.1002/crat.2170240408, DOI 10.1002/CRAT.2170240408]

← 1 2 3 4 →