Super-elastic and fatigue resistant carbon material with lamellar multi-arch microstructure.

ABSTRACT: Low-density compressible materials enable various applications but are often hindered by structure-derived fatigue failure, weak elasticity with slow recovery speed and large energy dissipation. Here we demonstrate a carbon material with microstructure-derived super-elasticity and high fatigue resistance achieved by designing a hierarchical lamellar architecture composed of thousands of microscale arches that serve as elastic units. The obtained monolithic carbon material can rebound a steel ball in spring-like fashion with fast recovery speed (∼580 mm s^-1), and demonstrates complete recovery and small energy dissipation (∼0.2) in each compress-release cycle, even under 90% strain. Particularly, the material can maintain structural integrity after more than 10⁶ cycles

SUBMITTER: Gao HL 

PROVIDER: S-EPMC5052633 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature