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
收藏
页码：184 / 190
页数：7
相关论文
共 30 条
[1]   NANOCRYSTALLINE MATERIALS [J].
BIRRINGER, R .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1989, 117 :33-43
[2]   Oxidation of two three-phase Cu-30M-Cr alloys at 700-800°C in 1 atm of pure oxygen [J].
Cao, Z. Q. ;
Shen, Y. ;
Liu, W. H. ;
Xue, Y. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 425 (1-2) :138-144
[3]  
Cao ZQ, 2001, HIGH TEMP MAT PR-ISR, V20, P377
[4]   Oxidation of two ternary Cu-Ni-20 wt.% Cr alloys at 700-800°C in 1 atm O2 [J].
Cao, ZQ ;
Niu, Y ;
Gesmundo, F .
OXIDATION OF METALS, 2001, 56 (3-4) :287-297
[5]   Microstructural effects on the high temperature oxidation of two-phase Cu-Cr alloys in 1 atm O2 [J].
Fu, GY ;
Niu, Y ;
Gesmundo, F .
CORROSION SCIENCE, 2003, 45 (03) :559-574
[6]   Transitions between different oxidation modes of binary Cu-Zn alloys in 0.1 MPa O2 at 1,073 K [J].
Gao, F. ;
Wang, S. ;
Gesmundo, F. ;
Niu, Y. .
OXIDATION OF METALS, 2008, 69 (5-6) :287-297
[7]  
GESMUNDO F, 1994, OXID MET, V42, P409
[8]   ON THE ROLE OF DISLOCATIONS IN BULK DIFFUSION [J].
HART, EW .
ACTA METALLURGICA, 1957, 5 (10) :597-597
[9]   Oxidation kinetics of a Ni-Cu based cermet at high temperature [J].
Honvault, C. ;
Peres, V. ;
Cassayre, L. ;
Chamelot, P. ;
Palau, P. ;
Bouvet, S. ;
Pijolat, M. .
CORROSION SCIENCE, 2013, 68 :154-161
[10]   High temperature oxidation of γ/γ′-strengthened Co-base superalloys [J].
Klein, L. ;
Bauer, A. ;
Neumeier, S. ;
Goeken, M. ;
Virtanen, S. .
CORROSION SCIENCE, 2011, 53 (05) :2027-2034
123