The University of Osaka · Engineering
Professor Hiroya Abe's research lab specializes in advanced materials processing and nanostructured materials development, with a focus on thermal insulation materials, metallic glass processing, and powder metallurgy. The lab explores innovative dry powder techniques to fabricate fiber-reinforced fumed silica composites for high-performance thermal insulation, as well as the dealloying behavior of metallic glasses under controlled chemical environments. Key research directions include the design of porous, lightweight insulating materials and the fundamental understanding of selective leaching in amorphous alloys.
Figures are computed from collected data and may differ slightly.
This study proposes a new dry powder processing method to produce fiber reinforced fumed silica compacts for highly efficient thermal insulation. First, mechanical forces such as shear stress and compression were applied into a fumed silica powder (BET SSA 300 m 2 /g) and glass fibers (3 mm length, 11 μm diameter) using an attrition type milling apparatus without any media balls. In the resultant powder mixture, fumed silica porously coated glass fiber composites were successfully prepared. SiC
The dealloying behavior of Cu60Zr30Ti10 metallic glass was investigated under free corrosion conditions using hydrofluoric acid (HF) solutions at room temperature. After immersing in HF solutions with various concentrations (0.05, 0.1, 0.5 and 1 M) for 300 s, color of all samples changed to be pinkish or peachy, which was ascribed to Cu based on the XRD patterns. According to the SEM-EDS study, HF immersion selectively leached the Zr and Ti elements, leaving Cu behind. Increasing the HF concentr
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