Article: Facile fabrication of Ni foam following powder metallurgy route Journal: International Journal of Materials Engineering Innovation (IJMATEI) 2026 Vol.17 No.3 pp.279 - 293 Abstract: This study focuses on the production and examination of micro porous nickel (Ni) foam using the powder metallurgy process with the goal of improving its mechanical and electrochemical properties for current industrial applications. Nickel powder of 99.5% purity was combined with ammonium bicarbonate as a space holder, then compressed under high pressure and sintered at 600°C and 800°C. Nickel powder and ammonium bicarbonate were combined in weight ratios of 60:40% and 80:20%, respectively. The surface morphology of the micro porous nickel foam was examined using scanning electron microscopy (SEM) and image analysis. The four Ni foam samples had pore sizes of 12.73 ± 7.72 μm, 11.41 ± 6.62 μm, 14.86 ± 6.51 μm, and 11.64 ± 7.29 μm, respectively. Compression and hardness tests were used to determine mechanical characteristics. The crushing strengths were found to be 3.96 MPa, 4.8 MPa, 2.2 MPa, and 2.8 MPa, respectively. The results showed that increasing the sintering temperature enhanced both the porosity and particle size. Inderscience Publishers - linking academia, business and industry through research

Title: Facile fabrication of Ni foam following powder metallurgy route

Authors: Tariful Islam Pappu; Mohammad Nezam Uddin Chy; Radheshyam Nath Jisu; Nahid Uddin; M.D. Tanvir Amin

Addresses: Department of Mechanical Engineering, Chittagong University of Engineering and Technology, Chittagong-4349, Bangladesh ' Department of Mechanical Engineering, Chittagong University of Engineering and Technology, Chittagong-4349, Bangladesh ' Department of Mechanical Engineering, Chittagong University of Engineering and Technology, Chittagong-4349, Bangladesh ' Department of Mechanical Engineering, Chittagong University of Engineering and Technology, Chittagong-4349, Bangladesh ' Department of Mechanical Engineering, Chittagong University of Engineering and Technology, Chittagong-4349, Bangladesh

Abstract: This study focuses on the production and examination of micro porous nickel (Ni) foam using the powder metallurgy process with the goal of improving its mechanical and electrochemical properties for current industrial applications. Nickel powder of 99.5% purity was combined with ammonium bicarbonate as a space holder, then compressed under high pressure and sintered at 600°C and 800°C. Nickel powder and ammonium bicarbonate were combined in weight ratios of 60:40% and 80:20%, respectively. The surface morphology of the micro porous nickel foam was examined using scanning electron microscopy (SEM) and image analysis. The four Ni foam samples had pore sizes of 12.73 ± 7.72 μm, 11.41 ± 6.62 μm, 14.86 ± 6.51 μm, and 11.64 ± 7.29 μm, respectively. Compression and hardness tests were used to determine mechanical characteristics. The crushing strengths were found to be 3.96 MPa, 4.8 MPa, 2.2 MPa, and 2.8 MPa, respectively. The results showed that increasing the sintering temperature enhanced both the porosity and particle size.

Keywords: powder metallurgy; sintering; compaction; ammonium bicarbonate; NH₄HCO₃; Ni foam; space holder.

DOI: 10.1504/IJMATEI.2026.155526

International Journal of Materials Engineering Innovation, 2026 Vol.17 No.3, pp.279 - 293

Received: 05 Jan 2025
Accepted: 14 Apr 2025
Published online: 04 Aug 2026 *

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Title: Facile fabrication of Ni foam following powder metallurgy route

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