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HomeMaterials Science ForumMaterials Science Forum Vol. 933Investigation on Relationship between Spacer...

Investigation on Relationship between Spacer Content and Porosity of Steel Foams

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Abstract:

Steel foams have been receiving a growing interest due to the unique structural properties. The space holder technique provides a high degree of freedom and allows to produce this kind of materials varying in a wide range of porosity. However, the accurate prediction of final porosities has been a difficult problem in this technique. Therefore, a nonlinear equation between spacer content (φ₁) and porosity (P) of the sintered steel foams was established in this study when macropores, micropores and their volumetric change were taken into account at the same time, that was P = (aφ₁+b)/(cφ₁+d). Then, validation of the theoretical relationship was carried out using the experimental data by authors and other researchers. The results showed that the porosity could be well predicted by the nonlinear relationship with varied preparing parameters. One set of coefficients in the model equation, i.e., a, b, c, d, corresponds to a certain preparing condition, while these values changed in different preparing conditions.

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Periodical:

Materials Science Forum (Volume 933)

Pages:

32-40

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.933.32

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Online since:

October 2018

Authors:

Hui Meng Wang, Ming Zhou Su, Chang Chen*

Keywords:

Macropores, Micropores, Porosity, Space Holder Technique, Steel Foams

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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