Rapid fabrication and corrosion behavior of 3D-porous Cu-Al-Si compounds via low-energy self-exothermic reactionShow others and affiliations
2025 (English)In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 1010, article id 177198Article in journal (Refereed) Published
Abstract [en]
In this study, porous Cu-Al-Si intermetallic compounds with three-dimensional structures were rapidly prepared by a novel self-exothermic reaction. By this method, Si was successfully solid-solved into CuAl intermetallic compounds and achieved better fusion with them. The effects of Si addition on their oxidation resistance and corrosion resistance were compared. The findings indicate that the minimum weight gain of the Cu-Al-Si product is only 1.48 % after oxidation at 800 °C for 288 h. Si facilitates the creation of a continuous Al2O3 protective layer on the surface of the porous Cu-Al-Si intermetallics skeleton, thereby preserving its internal structure while significantly enhancing its oxidation resistance. The incorporation of Si to Cu-Al intermetallics enhances the stability of the passivation film on the material's surface, increases the resistance of the passivation film, and effectively restricts the electrochemical reaction between the material and the corrosive medium.
Place, publisher, year, edition, pages
Elsevier, 2025. Vol. 1010, article id 177198
Keywords [en]
Porous materials, Thermal explosion, Intermetallics, Corrosion behavior
National Category
Materials Engineering Chemical Sciences
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-110698DOI: 10.1016/j.jallcom.2024.177198ISI: 001347827900001Scopus ID: 2-s2.0-85207643942OAI: oai:DiVA.org:ltu-110698DiVA, id: diva2:1912523
Note
Validerad;2024;Nivå 2;2024-12-04 (signyg);
Funder: National Natural Science Foundation of China (52020105011); the China Postdoctoral Science Foundation (2023M740352)
2024-11-122024-11-122024-12-04Bibliographically approved