The University of Osaka · Engineering
Professor Tohru Sekino's research lab specializes in the development and characterization of advanced ceramic and composite materials, with a focus on nanostructured metal-ceramic composites. The lab investigates synthesis techniques such as solid-state reactions, hydrogen reduction, and hot pressing to fabricate high-strength, high-hardness materials with tailored microstructures. Key research directions include the control of nanoparticle dispersion at grain boundaries to enhance mechanical properties at elevated temperatures, particularly for structural applications in extreme environments. The lab also explores the use of various nickel precursors to optimize the homogeneity and distribution of metallic phases in alumina-based matrices.
Figures are computed from collected data and may differ slightly.
High‐density nickel–dispersed‐alumina (Al 2 O 3 /nickel) composites with superior mechanical properties were obtained by the hydrogen reduction and the hot pressing of alumina–nickel oxide (Al 2 O 3 /NiO) mixed powders. The mixtures were prepared by using NiO or nickel nitrate (Ni(NO 3 ) 2 · n H 2 O) as a dispersion source of nickel metal. Microstructural investigations of the composite fabricated using nitrate powder revealed that fine nickel particles, } 100 nm in diameter, dispersed homogeneo
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