Electrochemical dealloying of a ternary Al67Cu18Sn15 alloy compared with that of a binary Al75Cu25 alloy

Song, T.1; Yan, M.2; Shi, Z.3; Atrens, A.3; Qian, M.1

10.1149/06640.0023ecst

2015

19385862

Symposium on Nanotechnology General Session - 227th ECS Meeting

66

40

23-30

Chicago, IL, United states

Electrochemical Society Inc.

This paper reports on the electrochemical dealloying of a ternary Al67Cu18Sn15 (in at.% throughout the paper) alloy consisting of α-Al, Al2Cu and Sn using potentiodynamic and potentiostatic polarization measurements. When the applied potential (-0.5 V) was below the critical potential of the Al2Cu phase (-0.41 V), complete electrochemical dealloying of the binary Al75Cu25 alloy (consisting of α-Al and Al2Cu) occurred, leading to the formation of a nanoporous (52 ± 10 nm) copper (Cu) structure. However, under the same condition dealloying only occurred partially to the α-Al phase in the ternary Al67Cu18Sn15 alloy due to the suppressing influence of Sn. The electrochemical dealloying of the ternary Al67Cu18Sn15 alloy was potential dependent and involved the concurrence of dealloying and realloying as evidenced by the formation of Cu6Sn5.
© The Electrochemical Society.

其他

EI

China Scholarship Council[]

20153501225481

Binary alloys ; Copper alloys ; Dealloying ; Nanotechnology ; Ternary alloys

Aluminum Alloys:541.2 ; Copper Alloys:544.2 ; Nanotechnology:761

EV Compendex

1.RMIT University, School of Aerospace, Mechanical and Manufacturing Engineering, Center for Additive Manufacturing, Melbourne; VIC; 3053, Australia
2.South University of Science and Technology of China, Department of Materials Science and Engineering, Shenzhen, Guangdong; 518055, China
3.University of Queensland, Division of Materials, School of Mechanical and Mining Engineering, Brisbane; QLD; 4072, Australia

Song, T.,Yan, M.,Shi, Z.,et al. Electrochemical dealloying of a ternary Al67Cu18Sn15 alloy compared with that of a binary Al75Cu25 alloy[C]:Electrochemical Society Inc.,2015:23-30.