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http://dx.doi.org/10.4150/KPMI.2002.9.3.161

Microstructure and Properties of Nano-Sized Ni-Fe Alloy Dispersed Al2O3 Composites  

남궁석 (한양대학교 금속재료공학과)
정재영 (한양대학교 금속재료공학과)
오승탁 (한양대학교 금속재료공학과)
이재성 (한양대학교 금속재료공학과)
이홍재 (요업기술원 나노소재팀)
정영근 (요업기술원 나노소재팀)
Publication Information
Journal of Powder Materials / v.9, no.3, 2002 , pp. 161-166 More about this Journal
Abstract
Processing and properties of $Al_2O_3$ composites with Ni-Fe content of 10 and 15 wt% were investigated. Homogeneous powder mixtures of $Al_2O_3$/Ni-Fe alloy were prepared by the solution-chemistry route using $Al_2O_3$, $Ni(NO_3)_2{\cdot}6H_2O$ and $Fe(NO_3)_3{\cdot}9H_2O$ powders. Microstructural observation of composite powder revealed that Ni-Fe alloy particles with a size of 20nm were homogeneously dispersed on $Al_2O_3$ powder surfaces. Hot-pressed composites showed enhanced fracture toughness and magnetic response. The properties are discussed based on the observed microstructural characteristics.
Keywords
Nanocomposite; Chemical processing; Fracture toughness; Magnetic property;
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