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)
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。
＜関連情報＞
- https://news.uci.edu/2022/08/22/uci-engineers-push-nanostructure-properties-to-new-extremes/
- https://www.science.org/doi/10.1126/sciadv.abo3080
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
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.
