Microstructure, capillary performance and gas permeability of biporous copper fabricated by tape casting

• Published in: Powder technology Vol. 256; pp. 182 - 187
• Main Authors: Ru, Jinming, Kong, Bo, Zhu, Hanxing, Shi, Zhongliang, Zhang, Di, Fan, Tongxiang
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.04.2014; Elsevier
• Subjects: Applied sciences; Biporous copper; Capillary performance; Chemical engineering; Exact sciences and technology; Gas permeability; Miscellaneous; Porosity; Solid-solid systems; Tape casting; Biporous copper; Gas permeability; Capillary performance; Porosity; Tape casting; Casting; Pumping; Tape; Pore structure; Microstructure; Foaming agent
• ISSN: 0032-5910; 1873-328X
• DOI: 10.1016/j.powtec.2014.02.009

Biporous copper was successfully fabricated by tape casting process using 0–1.5wt.% of C7H10N2O2S as the foaming agent. The influences of the foaming agent content on the pore structure, capillary performance and gas permeability were investigated. The results indicate that with increasing content of the foaming agent, the pumping rate increases, while the porosity and gas permeability fluctuate. It is suggested that biporous copper prepared by tape casting could be a good choice as the wick structure for heat pipe. The effects of foaming agent on pore structure, capillary performance and gas permeability were investigated. It is found that with increasing content of the foaming agent, the pumping rate increases, while the porosity and gas permeability fluctuate. Furthermore, biporous structure enhanced capillary performance and gas permeability. [Display omitted] •Biporous copper could be obtained by tape casting process with foaming agent.•Capillary performance was assessed by the pumping rate per unit mass.•Biporous copper possessed preferable pumping rate and gas permeability by contrast.