ナノ粒子の密度の均一な分散を含むマグネシウムの加工と特性
Lian-Yi Chen1,2,3, Jia-Quan Xu2, Hongseok Choi4
1Scifacturing Laboratory, Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, California 90095, USA.
Nature
|December 25, 2015
まとめ
研究者は,マグネシウムにシリコンカービッドナノ粒子を均一に分散させる新しい方法を開発し,高度なアプリケーションのためにその強さ,硬さ,可塑性を大幅に向上させました.
科学分野:
- 材料科学
- ナノテクノロジー
- 金属工学
背景:
- マグネシウムの特性 (軽量,豊富,生物互換性) は,航空宇宙,自動車,および生物医学分野での可能性を提供します.
- マグネシウムの特性強化を制限する.
- セラミック粒子を組み込むと強度が向上しますが,しばしば可塑性が低下します.ナノ粒子は均一に分散することが困難です.
研究 の 目的:
- マグネシウムマトリックス内のシリコンカービッドナノ粒子の密度,均等な分散を達成するために.
- 金属マトリックス複合材料の製造における従来の方法の限界を克服する.
- マグネシウムの機械的および熱的性質を高めるために.
主な方法:
- 溶けた金属でナノ粒子の自己安定化メカニズムを利用した.
- マグネシウムに14%のシリコンカービッドナノ粒子を 分散させました
- 合成されたマグネシウムナノ粒子の材料の特徴
主要な成果:
- マグネシウムのシリコンカービッドナノ粒子の密度と均一な分散を達成しました.
- 同時に強化された強度,硬さ,可塑性,および高温の安定性.
- その結果生成される複合材料は,ほとんどの構造金属と比較して優れている特異性強度と特異性モジュールを示しています.
結論:
- マグネシウムのナノ粒子の均一な分散を可能にする新しい方法は,以前の制限を克服します.
- 開発されたマグネシウムナノ粒子の複合物は 異例の多機能強化を示しています
- この突破は高性能構造材料の 新しいクラスを提供します
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