UCI のエンジニアがナノ構造の特性を新たな極限にまで高める(UCI engineers push nanostructure properties to new extremes)

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強靭で軽量な素材は、航空機から医療用インプラントまで幅広い用途に使われている Applications for strong and lightweight materials range from aviation to medical implants

2022-08-22 カリフォルニア大学校アーバイン校(UCI)

研究者たちは、相互侵入する位相複合体を作製することにより、堅牢かつ軽量であることがすでに認められているナノ構造体の強度とエネルギー吸収特性を大幅に向上させることに成功した。
3次元的にプリントしたカーボンシェルとニッケルのマトリックスからなる連続構造体が、従来のカーボンベースのナノ格子やバルク単体材料よりも優れた性能を示す。

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ナノ構造金属/セラミックス相互浸透相複合材料 Nanoarchitected metal/ceramic interpenetrating phase composites

Jens Bauer,Martí Sala-Casanovas,Mahsa Amiri ,Lorenzo Valdevit
Science Advances  Published:17 Aug 2022
DOI: 10.1126/sciadv.abo3080

UCI のエンジニアがナノ構造の特性を新たな極限にまで高める(UCI engineers push nanostructure properties to new extremes)

Abstract

Architected metals and ceramics with nanoscale cellular designs, e.g., nanolattices, are currently subject of extensive investigation. By harnessing extreme material size effects, nanolattices demonstrated classically inaccessible properties at low density, with exceptional potential for superior lightweight materials. This study expands the concept of nanoarchitecture to dense metal/ceramic composites, presenting co-continuous architectures of three-dimensional printed pyrolytic carbon shell reinforcements and electrodeposited nickel matrices. We demonstrate ductile compressive deformability with elongated ultrahigh strength plateaus, resulting in an extremely high combination of compressive strength and strain energy absorption. Simultaneously, property-to-weight ratios outperform those of lightweight nanolattices. Superior to cellular nanoarchitectures, interpenetrating nanocomposites may combine multiple size-dependent characteristics, whether mechanical or functional, which are radically antagonistic in existing materials. This provides a pathway toward previously unobtainable multifunctionality, extending far beyond lightweight structure applications.

0501セラミックス及び無機化学製品
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