The seawater corrosion resistance and mechanical properties of Cu47.5Zr47.5Al5 bulk metallic glass and its composites

被引：20
|
作者：
Gu, Youdi [1 ,2 ]
Zheng, Zhou [1 ]
Niu, Sizhe [1 ]
Ge, Wenjuan [1 ]
Wang, Yan [1 ,2 ]
机构：
[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Peoples R China
[2] Univ Jinan, Shandong Prov Key Lab Preparat & Measurement Bldg, Jinan 250022, Peoples R China
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2013年 / 380卷
基金：
中国国家自然科学基金;
关键词：
Bulk metallic glass; Composites; Seawater solution; Corrosion resistance; Mechanical properties; CU-ZR-TI; THERMAL-STABILITY; AMORPHOUS ALLOY; FORMING ABILITY; BEHAVIOR; MICROSTRUCTURE; CRYSTALLIZATION; DUCTILITY; STRENGTH;
D O I：
10.1016/j.jnoncrysol.2013.08.030
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The Cu47.5Zr47.5Al5 bulk metallic glass (BMG) and its composites have been synthesized by the copper-mold suction casting method and proper annealing treatment. The corrosion behaviors in seawater solution and mechanical properties of the BMG and its composites have been investigated by electrochemical polarization measurement, scanning electron microscopy and MTS Criterion testing machine. The results show that the as-cast BMG composite exhibits the higher corrosion poteptial and lower corrosion current density as well as distintt passive region. Combined with the corrosion morphologies, it suggests that the as-cast BMG composite has a higher corrosion resistance in seawater than the BMG and as-annealed composite, which is attributed to an appropriate amount of CuZr nanocrystals dispersing homogeneously in the glassy matrix. Compared to its composites, the Cu-based BMG with fully amorphous structure exhibits good ductility of-l% plastic elongation and high compressive fracture strength of -1843 MPa. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：135 / 140
页数：6
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