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Study on the Permeability and Mechanical Properties of Copper Powder/Mesh Porous Plates

  • Powder-based Functional Materials for Extreme Environments: Processing and Characterization
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Abstract

Copper powder and copper wire mesh were used as raw materials, and porous copper powder/mesh plates were prepared by pressing, rolling, and vacuum sintering. The plate morphology was observed by scanning electron microscopy. The air permeability of the porous plates was tested according to Darcy’s law, and uniaxial tensile tests were carried out on the porous plates to determine the influence of raw material mesh number and powder content on the porous plates’ permeability and tensile mechanical properties. The porous plate was fabricated into a restrictor of an aerostatic thrust bearing, and the static bearing performance of the bearing was tested on a bearing capacity testing platform. The results showed that the copper powder/mesh porous plate had a uniform pore distribution and a porosity range of 10% to 30%; the higher the porosity and lower the powder concentration, the better the performance was in terms of gas permeability. Tensile mechanical properties improved with decreasing porosity and increasing powder content. At a gas film thickness of 10 μm, the prepared gas hydrostatic thrust bearing could support a maximum load of 381.1 N.

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Acknowledgements

This work was supported by the Guangdong Provincial Key Areas R&D Program (No. 2019B090918003).

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  1. Guangdong Key Laboratory for Processing and Forming of Advanced Metallic Materials, School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, 510640, China

    Yingmao Chen & Zhaoyao Zhou

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  1. Yingmao Chen
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  2. Zhaoyao Zhou
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Chen, Y., Zhou, Z. Study on the Permeability and Mechanical Properties of Copper Powder/Mesh Porous Plates. JOM 76, 1235–1244 (2024). https://doi.org/10.1007/s11837-023-06273-9

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  • DOI: https://doi.org/10.1007/s11837-023-06273-9

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