Graphene-coated tungsten nanowires deliver unprecedented modulus and strength

Autor:	Zhong-Wei Hu, Min Wang, Chao-Wei Guo, Zhi-Wei Shan, Ju Li, Wei-Zhong Han
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	W nanowires graphene Young’s modulus fracture strength size effect Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Materials Research Letters, Vol 7, Iss 2, Pp 47-52 (2019)
Druh dokumentu:	article
ISSN:	2166-3831 21663831
DOI:	10.1080/21663831.2018.1553801
Popis:	Tungsten (W) nanowires have a wide range of chemical, electronic, and mechanical applications. However, the modulus and strength of traditional W nanowires are quite low, and how to improve their mechanical performance remains a challenge. Here, we describe a novel graphene-coated W nanowires that demonstrate a Young’s modulus of 885 GPa (twice that of W) and a fracture strength of up to 24.7 GPa (66% of the ideal strength). Both the Young’s modulus and the fracture strength show a strong size effect, resulting from the graphene-nanowire core–shell structure.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/b4e99d104a9c485094285102798b3c69 Zobrazit plný text záznamu View record in DOAJ