Synthesis of bioinspired ice-templated bulk metallic glass-alumina composites with intertwined dendritic structure

Title
Synthesis of bioinspired ice-templated bulk metallic glass-alumina composites with intertwined dendritic structure
Authors
장혜정김진연Je In LeeAmy WatChae Woo RyuEun Soo ParkRobert O Ritchie
Keywords
Bulk metallic glass (BMG); Composites; Infiltration; Intertwined dendritic structure; Mechanical properties
Issue Date
2019-11
Publisher
Scripta materialia
Citation
VOL 172-164
Abstract
We have successfully developed bulk-metallic glass (BMG) composites reinforced with intertwined dendritic alumina, inspired by the structure of nacre (Abalone shells). We harness the dendritic growth of ice crystals in a thermal gradient to assemble an alumina with dendritic pore architecture, which is then infiltrated with BMG-forming melt to make a bioinspired, micrometer-scale, intertwined BMG-alumina composite. The composite exhibits ultra-high strength with exceptional relative compressive strength, far better than ceramic particulate BMG composites. The method presented here can be further exploited to produce novel BMG composites with excellent mechanical properties.
URI
http://pubs.kist.re.kr/handle/201004/69715
ISSN
1359-6462
Appears in Collections:
KIST Publication > Article
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