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.
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