Al₂O₃-Ni composites: impact of cooling on composites in centrifugal gel casting

• Autorzy: Zygmuntowicz Justyna , Tańska Joanna , Wiecińska Paulina , Piotrkiewicz Paulina , Konopka Katarzyna , Szafran Mikołaj , Wachowski Marcin , Szachogłuchowicz Ireneusz , Kaszuwara Waldemar

Identyfikatory

DOI

10.62753/ctp.2025.04.2.2

• Języki publikacji: EN

Abstrakty

EN

This study investigates the influence of polymerization kinetics and the processing sequence on the microstructure and mechanical performance of Al₂O₃-Ni composites fabricated via centrifugal gel casting. Two fabrication approaches were compared, differing in the sequence of component addition and the temperature of the casting mass. The optimized method, involving cooling the suspension to below 5°C prior to the addition of nickel powder and the polymerization initiator, significantly extended the gelation idle time from 225 s to 475 s, allowing improved control over polymerization and particle dispersion. As a result, the microstructure exhibited enhanced phase homogeneity and reduced porosity. Compression tests demonstrated substantial enhancement in mechanical performance: the compres sive strength increased from 22 MPa in the non-optimized series to 185 MPa in the optimized series, representing more than an eightfold improvement. These findings highlight a practical strategy for tuning the polymerization behavior to engineer high-performance ceramic-metal composites with potential applications in structural and functional components.

Słowa kluczowe

EN

centrifugal gel casting; composites; polymerization; 2-2-carboxyethyl acrylate; CEA

PL

kompozyty; polimeryzacja; kompozyty ceramiczno-polimerowe

• Wydawca: Polskie Towarzystwo Materiałów Kompozytowych
• Czasopismo: Composites Theory and Practice
• Rocznik: 2025
• Tom: R. 25 nr 2
• Strony: 113--122
• Opis fizyczny: Bibliogr. 21 poz., rys.

Twórcy

autor

Zygmuntowicz Justyna

• Warsaw University of Technology, Faculty of Materials Science and Engineering, 141 Woloska St., 02-507 Warsaw, Poland

autor

Tańska Joanna

• Faculty of Chemistry, Warsaw University of Technology, 3 Noakowskiego St., 00-664 Warsaw, Poland

autor

Wiecińska Paulina

• Faculty of Chemistry, Warsaw University of Technology, 3 Noakowskiego St., 00-664 Warsaw, Poland

autor

Piotrkiewicz Paulina

• Warsaw University of Technology, Faculty of Materials Science and Engineering, 141 Woloska St., 02-507 Warsaw, Poland

autor

Konopka Katarzyna

• Warsaw University of Technology, Faculty of Materials Science and Engineering, 141 Woloska St., 02-507 Warsaw, Poland

autor

Szafran Mikołaj

• Faculty of Chemistry, Warsaw University of Technology, 3 Noakowskiego St., 00-664 Warsaw, Poland

autor

Wachowski Marcin

• Military University of Technology, Faculty of Mechanical Engineering, 2 Gen. S. Kaliskiego St., 00-908 Warsaw, Poland

autor

Szachogłuchowicz Ireneusz

• 3Military University of Technology, Faculty of Mechanical Engineering, 2 Gen. S. Kaliskiego St., 00-908 Warsaw, Poland

autor

Kaszuwara Waldemar

• Warsaw University of Technology, Faculty of Materials Science and Engineering, 141 Woloska St., 02-507 Warsaw, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).