Si3N4 reinforced Al-Si-Mg matrix composites: Powder metallurgy fabrication, PEO coating and characterization

Basit Öğe Kaydı
dc.contributor.authorYurekturk, Yakup
dc.contributor.authorSenyurt, Berk
dc.contributor.authorCeltik, Cansu
dc.contributor.authorKucukelyas, Burak
dc.contributor.authorAkcamli, Nazli
dc.date.accessioned2026-02-08T15:15:08Z
dc.date.available2026-02-08T15:15:08Z
dc.date.issued2025
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractSi3N4-reinforced Al-6.5Si-0.5Mg matrix composites were produced via a powder metallurgy (PM) method, which includes high-energy mechanical milling (HEBM) and pressureless sintering. An oxide-based ceramic protective coating was applied to the PM composites using the plasma electrolytic oxidation (PEO) technique. The novel aspect of this study lies in applying a PEO coating on particulate-reinforced AMCs produced through PM, which further enhances the composites' surface properties and corrosion resistance. The microstructural characterizations indicate that the mechanically alloyed (MA'ed) powders comprise Si and Mg phases integrated within the Al matrix along with embedded Si3N4 reinforcement particles, thus ensuring a composite structure. Hence, applying the mechanical alloying (MA) process and Si3N4 incorporation enhanced the densification and hardness properties of the Al-Si-Mg matrix, highlighting its reinforcing effect. The hardness of MA'ed and 15 wt% Si3N4incorporated composite increases to 144 HV. Also, the PEO-coated samples outperform all uncoated samples in terms of corrosion resistance. The PEO-coated Al-6.5Si-0.5Mg-15Si3N4 composite showed an approximate 89% decrease in corrosion rate compared to the uncoated Al-6.5Si-0.5Mg base alloy. Thus, the PEO-coated sample with 15 wt% Si3N4, demonstrates superior performance, with the highest polarization resistance and a balanced charge transfer resistance, making it the most effective in corrosion protection.
dc.description.sponsorshipBursa Technical University (BTU) Scientific Research Projects [221N018]
dc.description.sponsorshipThis work was supported by Bursa Technical University (BTU) Scientific Research Projects [grant number 221N018] . The authors also thank the Istanbul Technical University (ITU) -Metallurgical and Materials Engineering Department, Prof. Dr. Murat Baydogan, and Assis. Prof. Dr. Faiz Muhaffel for their support in the PEO treatments, and Dr. I center dot nal Kaan Duygun (BTU-Polymer Materials Engineering Department) for his help in electrochemical characterizations.
dc.identifier.doi10.1016/j.apsusc.2025.162622
dc.identifier.issn0169-4332
dc.identifier.issn1873-5584
dc.identifier.scopus2-s2.0-85217066067
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.apsusc.2025.162622
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5619
dc.identifier.volume690
dc.identifier.wosWOS:001425112900001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofApplied Surface Science
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzWOS_KA_20260207
dc.subjectAluminum-Matrix Composites
dc.subjectSilicon Nitride
dc.subjectPowder Metallurgy
dc.subjectPlasma Electrolytic Oxidation
dc.subjectStructure
dc.subjectCorrosion Properties
dc.titleSi3N4 reinforced Al-Si-Mg matrix composites: Powder metallurgy fabrication, PEO coating and characterization
dc.typeArticle

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu