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

SCRIPTA MATERIALIA

卷:172

Article

Lee, Je In^1,2,3  Wat, Amy^4,5  Kim, Jinyeon^1,6  Ryu, Chae Woo¹  Chang, Hye Jung⁶  Park, Eun Soo¹  Ritchie, Robert O.^4,5 

[1] Seoul Natl Univ, Res Inst Adv Mat, Dept Mat Sci & Engn, Seoul 08826, South Korea

[2] Natl Inst Mat Sci, Int Ctr Young Scientists, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan

[3] Pusan Natl Univ, Dept Mat Sci & Engn, Busan 46241, South Korea

[4] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA

[5] Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA

[6] Korea Inst Sci & Technol, Adv Anal Ctr, Seoul 02455, South Korea

关键词: Bulk metallic glass (BMG);    Composites;    Infiltration;    Intertwined dendritic structure;    Mechanical properties;   

DOI  :  10.1016/j.scriptamat.2019.07.023

来源: Elsevier

【 摘 要 】

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. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free