Synergetic effect of nano-carbon and HBN on microstructure and mechanical properties of Cu/Ti3SiC2/C nanocomposites

Autor: Xiaosong Jiang, Wanxia Liu, Rui Shu, Zhenyi Shao, Zhiping Luo, Tingfeng Song
Přispěvatelé: Chinese Academy of Sciences, National Natural Science Foundation of China, China Postdoctoral Science Foundation
Rok vydání: 2019
Předmět:
Zdroj: Digital.CSIC. Repositorio Institucional del CSIC
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ISSN: 0921-5093
5120-1143
DOI: 10.1016/j.msea.2019.04.002
Popis: The multiphase co-reinforcing composite combines the advantages of different reinforcing phases to give composite superior properties. In this study, nano-carbon and hexagonal boron nitride (HBN) reinforced Cu-Ti3SiC2-C composites are fabricated by surface modification, ball milling, vacuum hot pressing (VHP) and hot isostatic pressing (HIP). The content of nano-carbon is 0.5 wt%, and the ratio of multi walled carbon nanotubes (MWCNTs) to graphene was 4:1, 1:1 and 1:4, respectively. Microstructure and mechanical properties of the prepared composites are systematically tested and analyzed. Results show that the interface bonding mode between the reinforcements and matrix is mainly mechanical locking. The composite with the ratio of MWCNTs to graphene is 4:1 shows the best properties in which the hardness, tensile, compressive and shear strength are 121.91 HV, 163.87 MPa, 431.86 MPa and 122.56 MPa, respectively. The reinforcements improve the properties of composites by the mechanisms of load transfer, fine grain strengthening, particle strengthening and anti-friction lubrication.
This work was supported by Key Laboratory of Infrared Imaging Materials and Detectors, Shanghai Institute of Technical Physics, Chinese Academy of Sciences (No.IIMDKFJJ-17-06), National Natural Science Foundation of China (No. 51201143), China Postdoctoral Science Foundation (No. 2015M570794, No. 2018T110993).
Databáze: OpenAIRE
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