Dealloying Behavior of Al-Cu-Sn Ternary Alloy in an Alkaline Solution

Abstract:

In this article, a new ternary Al-Cu-Sn alloy system has been exploited through chemical dealloying in a 20wt% NaOH solution for 8 hours at different temperatures. The experimental results show the dealloying temperature plays a significant role in the formation of Cu₆Sn₅ and the length scales of the small-sized ligament/channels in fixed delloying duration. With the increase of dealloying temperature, more new phase Cu₆Sn₅ emerges and the length scales of the small-sized ligament/channels increase. Additionally, the as-dealloyed samples have three-dimensional (3D) structure composed of large-sized channels (hundreds of nanometers) and small-sized channels (tens of nanometers). Both large and small-sized pores are 3D, open and bicontinuous.

• Periodical: Advanced Materials Research (Volumes 399-401)
• Pages: 774-779
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.399-401.774
• Online since: November 2011
• Authors: Ye Fei Feng, Shi Chao Zhang, Ya Lan Xing, Wenbo Liu
• Keywords: Alkaline Solution, Bimodal Channelsize Distributions, Delloying Temperature, Nanoporous Structure, Ternary Alloy

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