高アスペクト比ポーラスAl の作製プロセスの開発 とマイクロX 線トモグラフィー

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  • 安田 秀幸
    大阪大学大学院工学研究科知能・機能創成工学専攻
  • 大中 逸雄
    大阪産業大学工学研究科アントレプレナー専攻
  • 藤本 慎司
    大阪大学大学院工学研究科マテリアル応用工学専攻

書誌事項

タイトル別名
  • Fabrication of Porous Al with Deep Pores by Using Micro X-ray Tomography
  • コウ アスペクトヒ ポーラス Al ノ サクセイ プロセス ノ カイハツ ト マイクロ Xセン トモグラフィー

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抄録

Porous media in which deep pores are regularly aligned were fabricated by unidirectional solidification of monotectic alloys and selective dissolution of the rod phase. Unidirectional solidification of Al-In alloys with hyper-monotectic compositions under a high static magnetic field up to 10 T achieved the rod-type eutectic-like structure in which continuous rods were regularly aligned. The static magnetic field exceeding several T reduced movement of the In droplets and enhanced the engulfment of the In droplets into the solidifying front. The coupled growth between the liquid In and the Al occurred and consequently the regular structure was produced even at the hyper-monotectic composition. A selective dissolution of the In rods from the Al matrix was performed to fabricate porous media. A micro X-ray tomography technique using a synchrotron radiation was used to evaluate the solidified structure and the selective dissolution of the In rod during the electrochemical etching.

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