大阪大学 · 工学
アベ教授の研究室では、高度な熱絶縁材料の開発を目的とし、粉体処理技術を応用した繊維強化fumed silicaコンパクトの作製に注力しています。特に、媒体球を用いない撹拌ミリングを用いた乾式プロセスにより、ナノ構造の酸化ケイ素とガラス繊維を効果的に複合化し、高強度・低熱伝導率の断熱材を創出しています。また、SiCを添加したopaquersの統合による赤外線遮断性能の向上も行っています。
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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