Achieving high stability of MgO/carbon nanotube interface via the co-deposition technique

In this work, high stability of MgO/carbon nanotube (CNT) interface has been achieved through coating MgO nanoparticles on the surface of CNT via the co-deposition technique. Experimental results indicate that two types of MgO nanoparticles, those are single-crystal and poly-crystal nanoparticles we...

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Bibliographic Details
Published in:Journal of alloys and compounds 2020-05, Vol.824, p.153889, Article 153889
Main Authors: Yuan, Qiu-hong, Huang, Han-qing, Wang, Wei-cheng, Zhou, Guo-hua, Luo, Lan, Zeng, Xiao-shu, Liu, Yong
Format: Article
Language:English
Subjects:
Bonding strength
Carbon nanotubes
Codeposition
First principles calculation
Interface
Interface stability
Interfacial bonding
Magnesium base alloys
Magnesium matrix composite
Magnesium oxide
Nanoparticles
Nucleation
Single crystals
Ultrasonic vibration
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Summary:In this work, high stability of MgO/carbon nanotube (CNT) interface has been achieved through coating MgO nanoparticles on the surface of CNT via the co-deposition technique. Experimental results indicate that two types of MgO nanoparticles, those are single-crystal and poly-crystal nanoparticles were uniformly coated on the surface of CNT. The oxygen groups on CNT introduced by purification are crucial to the nucleation and growth of MgO nanoparticles on the surface of CNT via the C–O–Mg bonds interaction, and resulting in the formation of MgO/CNT interface in the sample of MgO@CNT. The survived stable interface of MgO/CNT in the long time (22 h) and high intensity ultrasonic vibration (1000 W) treatment, suggests that the MgO/CNT interface has an excellent stability in microstructure. The calculations of work of adhesion for the interface models gives the evidence that MgO nanoparticles can form a strong interfacial bonding with CNT, proving the high stability of the MgO/CNT interface. MgO-coated CNT with high stable interface is suited to act as the reinforcing additive for the matrix of Mg alloy. •There are two types of MgO nanoparticles, that is single-crystal and poly-crystal nanoparticles were uniformly coated on the surface of CNT.•The interface of MgO/CNT in the sample of MgO@CNT has an excellent stability in the microstructure.•MgO@CNT is favorable to improve the interfacial bonding between CNT and the matrix of Mg in the Mg-based composite.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2020.153889