Nanocomposite; Chemical processing; Fracture toughness; Magnetic property
Issue Date
2002-06
Publisher
한국분말야금학회
Citation
한국분말야금학회지, v. 9, no. 3, page. 161-166
Abstract
Processing and properties of Al2O3 composites with Ni-Fe content of 10 and 15 wt% were investigated. Homogeneous powder mixtures of Al2O3/Ni-Fe alloy were prepared by the solution-chemistry route using Al2O3, Ni(NO3)2 6H2O and Fe(NO3)3 9H2O powders. Microstructural observation of composite powder revealed that Ni-Fe alloy particles with a size of 20 nm were homogeneously dispersed on Al2O3 powder surfaces. Hot-pressed composites showed enhanced fracture toughness and magnetic response. The properties are discussed based on the observed microstructural characteristics.