Innovative reinforcement method for metal foam cell wall using CNTs

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dc.authorid0000-0002-5736-8557
dc.authorid0000-0003-3350-1509
dc.contributor.authorCilsal, Onur Ozan
dc.contributor.authorLekesiz, Huseyin
dc.contributor.authorCakir, M. Cemal
dc.date.accessioned2026-02-08T15:15:36Z
dc.date.available2026-02-08T15:15:36Z
dc.date.issued2024
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractCarbon nanotubes (CNTs) and their composites are gaining popularity due to their exceptional strength qualities. It is well known that adding CNTs to metal foam composites boosts compressive strength. On the other hand CNT addition is still a costly process due to high cost of the CNTs. This study presents a novel and cost-effective solution by selectively adding CNTs to the structurally weakest regions of aluminum foam materials produced via powder metallurgy, employing a newly developed focused multi-step additive method. The cell borders of aluminum foam are strengthened with multiple spherical layers of CNTs, using a transfer method by initially coating the space holders used at the foaming process. The strength increase effect of this CNT addition method was compared with the widely known aluminum foam production parameters via a 4-parameter design of experiment (DOE) study. Compressive strength values of the samples were evaluated using a constant speed compression test acc. to ISO13314. The compacting pressure, CNT concentration, sintering temperature, and sintering period were chosen as DOE parameters, and 78% of the interactions effecting on final compressive strength could be explained with the model. As a result, it was established that, compared to the other parameters, sintering duration had the highest influence on compressive strength. But besides It has also been shown that adding 0.53% CNT by weight only to the cell border regions increases overall strength by 9%. This weight-strength increase ratio is compared with similar studies in the literature and found to be providing a production cost advantage due to the lower amount of CNT addition requirement for the comparable weight relative strength increase. Focused strength increase method has potential to enable controlled failure of foam materials by selectively strengthening strength critical areas of a component.
dc.identifier.doi10.1088/1361-6528/ad5f35
dc.identifier.issn0957-4484
dc.identifier.issn1361-6528
dc.identifier.issue44
dc.identifier.pmid38964311
dc.identifier.scopus2-s2.0-85201216258
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1088/1361-6528/ad5f35
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5872
dc.identifier.volume35
dc.identifier.wosWOS:001289750800001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherIop Publishing Ltd
dc.relation.ispartofNanotechnology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzWOS_KA_20260207
dc.subjectaluminum foam
dc.subjectcomposite
dc.subjectcarbon-nanotube
dc.subjectCNT
dc.subjecttomography
dc.subjectpowder-metallurgy
dc.titleInnovative reinforcement method for metal foam cell wall using CNTs
dc.typeArticle

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