Structure and oil retaining capacity of gasar copper fabricated by radial solidification with a combined crystallizer |
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Authors: | Hao Du Jianzhong Qi Shuangqiang Du Tianying Xiong Tiefan Li Soo Wohn Lee |
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Affiliation: | 1. Division of Surface Engineering of Materials, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, PR China;2. Jiaxing Engineering Center, Institute of Metal Research, Chinese Academy of Sciences, 778 Yatai Road, Jiaxing 314006, PR China;3. Jiaxing Zhongke Jinjia Special Materials Company, 778 Yatai Road, Jiaxing 314006, PR China;4. Department of Environment Engineering, Sun Moon University, 100, GalSan-Ri, TangJung-Myon, Asan, ChungNam, 336-708, Republic of Korea |
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Abstract: | Porous copper with elongated pores was fabricated by a radial solidification method. The process was carried out in a combined crystallizer under high pressure of a mixture of hydrogen and argon. Pore size, pore length, pore density and porosity of the porous copper were characterized. Furthermore, the oil retaining capacity including oil content and oil efficiency was also evaluated. It is found that porous copper solidified with water-circulated chiller through a thick graphite jacket possesses a gradient structure with increasing pore size, and thus pore density decreases. Also pore length and pore aspect ratio decrease from lateral inwardly, while its porosity is almost uniform. The results show that the porous copper with radial pores has a good oil retaining capacity. |
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Keywords: | Porous copper Solidification Pore morphology Oil content |
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