High-Strength Amorphous Carbon Composed of Onion-Like Structure Elements

被引：0
|
作者：
Ouyang W. [1 ]
Zhang X. [1 ]
Liang Z. [1 ]
Liu B. [1 ]
Wu Y. [1 ,2 ]
Li B. [1 ]
Sun L. [1 ]
Ying P. [1 ]
Zhao Z. [1 ]
机构：
[1] Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao
[2] Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2022年 / 50卷 / 07期
关键词：
Amorphous carbon; High strength; High temperature and high pressure; Onion-like structure;
D O I：
10.14062/j.issn.0454-5648.20220039
中图分类号：
学科分类号：
摘要：
Amorphous carbonas one of disordered carbon materials usually exhibits different mechanical, electrical, optical and thermal properties from crystalline carbon materials. Exploring high-performance amorphous carbon materials is always a research hotspot. In this paper, a high-strength amorphous carbon composed of onion-like structural elements was reported. This kind of amorphous carbon was obtained via treating carbon black at high temperature and high pressure (i.e., 1 700-2 000 ℃ and 6 GPa), which shows excellent mechanical properties. The nano indentation hardness, indentation elastic recovery, uniaxial compressive and flexural strength of the sample with best performance are 5.1 GPa, 80.1%, 956.4 MPa and 216.0 MPa, respectively. The compressive and flexural strengths of the amorphous carbon are 5.6 times and 2.8 times greater than those of Toyo Tanso ISO-68 graphite, respectively. This kind of amorphous carbon also has a good conductivity, and its room-temperature resistivity can be as low as 75.7 μΩ•m. This high-strength conductive amorphous carbon can be widely used as electrode and mold materials. © 2022, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：1776 / 1782
页数：6
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