Development of new-type metallic glasses by using multi-step liquid phase separation

多步液相分离开发新型金属玻璃

• 批准号: 23760667
• 负责人: NAGASE Takeshi
• 金额: $ 2.83万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23760667/
• 关键词: アモルファス材料; 金属ガラス; 液体分離; ワイヤー; ファイバー; アモルファス; 液体急冷; 電子顕微鏡; 材料組織

A dual-layer ribbon of Co-Si-B-Cu alloy was prepared by the single-roller melt-spinning method. The substrate surface comprised Co-Si-B-based amorphous phase with Cu crystalline nanoscale globules, while the free surface showed a thin crystalline Cu layer . A macroscopically separated unique structure was obtained by the simultaneous occurrence of liquid phase separation of the Co-Cu-based alloy system and amorphous phase formation in the Co-Si-B alloy layer. Rapidly-solidified wire with macroscopically separated structure was formed in Fe-Si-B-Cu alloy by Arc-melt-type melt-extraction method. Unique core-wire / surface-cover-layer structure composed with core Fe-Si-B amorphous based alloy and cover Cu crystal was formed through liquid phase separation during rapid quenching of thermal melt.

采用单辊熔体旋压法制备了Co-Si-B-Cu合金双层薄带。衬底表面由Co-Si-B基非晶相和铜晶纳米颗粒组成，而自由表面为薄层晶态铜层。通过Co-Cu基合金体系的液相分离和Co-Si-B合金层中非晶相的形成，获得了宏观上分离的独特结构。采用弧熔式熔体抽提法在Fe-Si-B-Cu合金中形成了具有宏观析出组织的快速凝固丝材。在热熔体快速淬火过程中，通过液相分离，形成了核心Fe-Si-B非晶基合金和覆盖层铜晶体组成的独特的芯线/表面覆盖层结构。

项目成果

液体分離現象を利用した新材料開発

利用液体分离现象开发新材料

• 发表时间: 2012
• 作者: 永瀬丈嗣;馬越佑吉
• 通讯作者: 馬越佑吉

液体分離現象を用いた新材料開発

利用液体分离现象开发新材料

• 发表时间: 2012
• 作者: 永瀬丈嗣;馬越佑吉
• 通讯作者: 馬越佑吉

Formation of melt-extracted wire with core-wire/surface-cover-layer structure by arc-melt-type melt-extraction method

电弧熔化式熔拔法形成芯线/表面覆盖层结构的熔拔线材

• 发表时间: 2011
• 作者: 永瀬丈嗣;馬越佑吉;T. Nagase and Y. Umakoshi
• 通讯作者: T. Nagase and Y. Umakoshi