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
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