Fabrication, Structure and Property of Copper Foam

Abstract:

Copper foams by using CaCl₂ as space holder were successfully manufactured by sintering and dissolution process. The porosity ranges from 75% to 91%, and cell size from 0.3mm to 3.0m. The volume fraction of CaCl₂ and sintering temperature are the main factors that affect porosity of copper foam. The yield plateau stress of copper foams with porosity between 75.88% and 90.19% is in range of 12.1~1.2MPa. The yield plateau stress decreases with the increase of porosity. The energy absorption per unit volume (W) copper foams with porosity between 75.88% and 90.19% is in range of 6.17~0.63MJ/m3. Under the condition of identical porosity, the absorption energy per unit volume (W) of copper foam is about 43% higher than aluminum foam. The maximum ideal energy absorption efficiency of copper foam is about 0.74, it indicates that the copper foam can be used as a good absorbing material.

• Periodical: Materials Science Forum (Volume 933)
• Pages: 41-48
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.933.41
• Online since: October 2018
• Authors: Chao Qun Guo, Ya Dong Sun, Yun Zhou*, Bo Xie, Tian Yao Wang, Xiao Qing Zuo
• Keywords: CaCl₂, Copper Foam, Energy Absorption, Plateau Stress

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