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Relationship Between Porosity and Spacer Content of Open Cell Metal Foams

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Abstract

Metal foams with high melting points are generally fabricated by the space holder technique. Foams with desirable pore size, shape and distribution can be obtained by using appropriate space holder. However, porosity (P) is always not equal to spacer content (ϕmac), which makes it difficult to obtain the expected porosity. In this study, a model equation for describing the relationship between P and ϕmac was established based on theory, i.e., P = (a1ϕmac + a2)/(a3ϕmac + a4). Each coefficient ai (i.e., a1, a2, a3, a4) could be determined by the porosity of cell walls (Pcell wall) and the volume change rate of macropores (Rmac). The theoretical equation was in accordance with the experimental results by authors and in the studies. It implies that Pcell wall and Rmac can be considered as constants in one certain production condition.

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Acknowledgement

This work was supported by the National Natural Science Foundation of China (Grant No. 51478380).

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Authors and Affiliations

  1. School of Civil Engineering, Xi’an University of Architecture and Technology, 13 Yanta Road, Xi’an, 710055, P. R. China

    Mingzhou Su, Huimeng Wang, Qiaoling Zhou, Kang Liu & Xiaodong Hao

  2. Key Lab of Structural Engineering and Earthquake Resistance, Ministry of Education (XAUAT), Xi’an, 710055, P. R. China

    Mingzhou Su

  3. School of Materials Science and Engineering, Xi’an University of Architecture and Technology, 13 Yanta Road, Xi’an, 710055, P. R. China

    Chang Chen

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  1. Mingzhou Su
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  2. Huimeng Wang
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  3. Qiaoling Zhou
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  6. Xiaodong Hao
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Correspondence to Chang Chen.

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Su, M., Wang, H., Zhou, Q. et al. Relationship Between Porosity and Spacer Content of Open Cell Metal Foams. Trans Indian Inst Met 73, 667–673 (2020). https://doi.org/10.1007/s12666-020-01867-2

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  • DOI: https://doi.org/10.1007/s12666-020-01867-2

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