Investigation on mechanical properties of nickel open cell metal foam after heat treatment

• Published in: Scientific reports Vol. 13; no. 1; p. 16569
• Main Authors: Shajari, Y., Nikzad, L., Razavi, M.
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 03-10-2023; Nature Publishing Group; Nature Portfolio
• Subjects: 639/166; 639/301; Absorption; Energy; Foams; Heat treatment; Heat treatments; Humanities and Social Sciences; Mechanical properties; Metals; multidisciplinary; Nickel; Polymers; Science; Science (multidisciplinary)
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-023-42857-w

This investigation aims to assess the mechanical behavior and energy absorption properties of the open-cell nickel foams. The metal foams produced by electroforming of nickel on PU foams, also a heat treatment has applied to evaporate the PU foam, then a uniaxial compression test was applied to measure maximum compressive strength, energy absorption density, efficiency, and normalized stresses. The results indicate that compared with typical open-cell nickel foams and polymer precursors when the electroforming time is 12 h and a heat treatment has applied, the aforementioned properties of the metal foams had a significant improvement. Improvement of properties will change by increasing the time of electroforming. The heat treatment improved the energy absorption density of open-cell nickel foams for 3.7 times. For the best sample which is a metal foam with 12 h of electroforming with heat treatment the first maximum compressive strength, energy absorption density, and energy absorption efficiency reach 1.84 (MPa), 3.29 (mJ/mm
3
), and 73%, respectively.