Highly conductive graphite matrix/copper composites by a pressureless infiltration method

Autor:	Guangning Wu, Zefeng Yang, Xie Wenhan, Liao Qianhua, Zuo Haozi, Guofeng Yin, Xiaobo Li, Zhanglin Huang, Wenfu Wei
Rok vydání:	2021
Předmět:	Materials science Composite number General Physics and Astronomy chemistry.chemical_element Copper Matrix (geology) Contact angle chemistry.chemical_compound chemistry Tungsten carbide Electrical resistivity and conductivity Graphite Composite material Electrical conductor
Zdroj:	Journal of Applied Physics. 130:015102
ISSN:	1089-7550 0021-8979
Popis:	Graphite matrix/copper composites have found significant potential uses in numerous areas. Until now, a high ambient gas pressure has to be applied to overcome the non-wettability between the copper melt and graphite matrix, which has restricted the technological and economic efficiencies, as well as the composite performance. In this paper, we have proposed a pressureless infiltration strategy to realize the preparation of highly conductive graphite matrix/copper composites. A tungsten carbide network is first in situ constructed in the graphite matrix, transforming the capillary force from the resistance mode to the impetus mode. Results show that the contact angle of graphite/copper decreased from 138.5° to 23° due to the constructed tungsten carbide network. The composites exhibit good interfacial bonding, and the electrical conductivity reaches 15.1 × 105 S/m, far higher than the requirement of the industry standard.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::94c5d3614b15c3f41834dff3e2760f96 https://doi.org/10.1063/5.0056198 Zobrazit plný text záznamu