Effect of mischmetal addition on the electrochemical behavior of chromium-alloyed iron aluminide

被引：3

作者：

Babu, N ^{[1
]}

Balasubramaniam, R

Kumar, AVR

机构：

[1] Indian Inst Technol, Dept Mat & Met Engn, Kanpur 208016, Uttar Pradesh, India

[2] Def Mat Stores & Res Dev Estab, Kanpur 208013, Uttar Pradesh, India

来源：

JOURNAL OF MATERIALS SCIENCE LETTERS | 2000年 / 19卷 / 12期

关键词：

D O I：

10.1023/A:1006751406173

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of mischmetal (Mm) additions on the electrochemical behavior of the Cr-alloyed iron aluminides in acidic media was studied. The potentiodynamic polarization behavior of Mm-alloyed iron aluminides revealed that rare earth additions are beneficial as regards passivation of Cr-alloyed iron aluminides. The major effect of Mm additions appeared to be in the alteration of the nature of the passive film such that the lower passive current density was obtained. The critical current density for passivation, the passive range, the zero current potential and the breakdown potential were not significantly affected by Mm additions to Cr-alloyed iron aluminides.

引用

页码：1061 / 1062

页数：2

共 10 条

[1] Role of surface passive films in the hydrogen embrittlement of iron aluminides [J].

Agarwal, A ;

Balasubramaniam, R .

BULLETIN OF MATERIALS SCIENCE, 1996, 19 (01) :91-102

[2] Effect of alloying on aqueous corrosion and mechanical behaviour of iron aluminide Fe3Al [J].

Agarwal, A ;

Akhtar, MJ ;

Balasubramaniam, R .

JOURNAL OF MATERIALS SCIENCE, 1996, 31 (19) :5207-5213

[3]

[Anonymous], SCRIPTA METALL MATER

[4] On the role of chromium in minimizing room temperature hydrogen embrittlement in iron aluminides [J].

Balasubramaniam, R .

SCRIPTA MATERIALIA, 1996, 34 (01) :127-133

[5]

Banerjee P, 1998, T INDIAN I METALS, V51, P451

[6] Mechanical behavior of chromium and titanium alloyed iron aluminides with mischmetal addition [J].

Banerjee, P ;

Balasubramaniam, R .

SCRIPTA MATERIALIA, 1998, 38 (07) :1143-1147

[7]

BUCHANAN RA, 1990, MATER RES SOC S P, V213, P945

[8] EFFECT OF CHROMIUM ON PROPERTIES OF FE3AL [J].

MCKAMEY, CG ;

HORTON, JA ;

LIU, CT .

JOURNAL OF MATERIALS RESEARCH, 1989, 4 (05) :1156-1163

[9] Deciphering the potentiodynamic polarization curves of iron aluminides Fe3Al and Fe3Al+Cr [J].

Mukherjee, S ;

Balasubramaniam, R .

BULLETIN OF MATERIALS SCIENCE, 1996, 19 (05) :831-835

[10]

TOMASHOV D, 1967, PASSIVITY PROTECTION

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