High temperature corrosion behavior of Cu-20Co-30Cr alloys with different grain size

被引：7

作者：

Cao, Z. Q. ^{[1
]}

Sun, H. J. ^{[1
]}

Lu, J. ^{[1
]}

Zhang, K. ^{[1
]}

Sun, Y. ^{[1
]}

机构：

[1] Shenyang Normal Univ, Dept Chem, Shenyang 110034, Peoples R China

来源：

CORROSION SCIENCE | 2014年 / 80卷

基金：

中国国家自然科学基金;

关键词：

High-temperature corrosion; Oxidation; Alloy; CU-CR ALLOYS; 1 ATM O-2; AIR OXIDATION; AL-ALLOYS; 1-ATM; 700-800-DEGREES-C; MODES;

D O I：

10.1016/j.corsci.2013.11.025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The corrosion behavior of Cu-20Co-30Cr alloys with different grain size was investigated at 700-900 degrees C in 0.1 MPa pure oxygen. The corrosion rates of fine-grained MACu-20Co-30Cr alloy are significantly lower than those of coarse-grained PMCu-20Co-30Cr alloy. PMCu-20Co-30Cr alloy forms the external scales of Cu oxides followed by an internal oxidation region containing alloy and a mixture of Cu, Co and Cr oxides as well as their complex oxides. MACu-20Co-30Cr alloy forms the continuous scales of chromia and a Cr-depleted layer occurs beneath the scales. The grain refinement is helpful to form the continuous scales of chromia in a Cu-Co-Cr alloy. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：184 / 190

页数：7

共 30 条

[11]

Kofstad P., 1988, HIGH TEMPERATURE COR

[12]

Kosuge K., 2000, P 2000 POWD MET WORL

[13] Anomalous Behavior of the Internal Oxidation of Dilute Cu-Ni Alloys Under 1 atm. O2 at 900 A°C [J].

Lu, L. Y. ;

Wang, S. ;

Gesmundo, F. ;

Niu, Y. .

OXIDATION OF METALS, 2011, 75 (5-6) :297-311

[14]

Matecka J., 2012, CORROS SCI, V63, P287

[15] The nature of the third-element effect in the oxidation of Fe-xCr-3 at.% Al alloys in 1 atm O2 at 1000 °C [J].

Niu, Y. ;

Wang, S. ;

Gao, F. ;

Zhang, Z. G. ;

Gesmundo, F. .

CORROSION SCIENCE, 2008, 50 (02) :345-356

[16] The internal oxidation of ternary alloys. VIII: The transition from the internal to the external oxidation of the two most-reactive components under high-oxidant pressures [J].

Niu, Y. ;

Gesmundo, F. .

OXIDATION OF METALS, 2006, 65 (5-6) :329-355

[17] High-temperature scaling of Cu-Al and Cu-Cr-Al alloys: An example of a non-classical third-element effect [J].

Niu, Y. ;

Wang, S. Y. ;

Gesmundo, F. .

OXIDATION OF METALS, 2006, 65 (5-6) :285-306

[18] The third-element effect in the oxidation of Ni-xCr-7Al (x=0, 5, 10 15 at.%) alloys in 1 atm O2 at 900-1000 °C [J].

Niu, Y. ;

Zhang, X. J. ;

Wu, Y. ;

Gesmundo, F. .

CORROSION SCIENCE, 2006, 48 (12) :4020-4036

[19] The air oxidation of two-phase Cu-Cr alloys at 700-900°C [J].

Niu, Y ;

Gesmundo, F ;

Viani, F ;

Douglass, DL .

OXIDATION OF METALS, 1997, 48 (5-6) :357-380

[20] The air oxidation of two-phase Co-Cu alloys at 600-800°C [J].

Niu, Y ;

Song, J ;

Gesmundo, F ;

Farne, G ;

Fu, G ;

Zeng, C .

CORROSION SCIENCE, 2000, 42 (05) :799-815

← 1 2 3 →