通过静电组装法制备的AlO基纳米碳复合材料的可控微观结构和力学性能。

Controlled microstructure and mechanical properties of AlO-based nanocarbon composites fabricated by electrostatic assembly method.

作者信息

Tan Wai Kian, Hakiri Norio, Yokoi Atsushi, Kawamura Go, Matsuda Atsunori, Muto Hiroyuki

机构信息

Institute of Liberal Arts & Sciences, Toyohashi University of Technology, 1-1, Hibarigaoka, Tempaku-cho, Toyohashi, Aichi, 441-8580, Japan.

Department of Electrical & Electronics Information Engineering, Toyohashi University of Technology, Toyohashi, Aichi, 441-8580, Japan.

出版信息

Nanoscale Res Lett. 2019 Jul 23;14(1):245. doi: 10.1186/s11671-019-3061-4.

DOI:10.1186/s11671-019-3061-4

PMID:31338607

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6650519/

Abstract

This work reports on the microstructure-controlled formation of interconnected carbon-layered AlO ceramics using carbon nanoparticles (CNP)-alumina (AlO) composite particles. The AlO micro-particles used in this study were obtained by granulation of nano-sized AlO nanoparticles with an average diameter of 150 nm. Then, CNP-AlO composite was fabricated using an electrostatic assembly method using the granulated AlO and CNP. The decoration of CNP on the surface of granulated AlO was investigated as a function of primary particle size and coverage percentage using a fixed amount of CNP. Notably, an interconnected layer of carbon particles at the interface of AlO that resemble the grain boundaries was obtained. The mechanical properties of the samples obtained with different particle size and CNP coverage on AlO particles were also investigated which presented the possibility to control the mechanical properties through microstructural design of composite ceramic materials.

摘要

这项工作报道了使用碳纳米颗粒（CNP）-氧化铝（Al₂O₃）复合颗粒通过微观结构控制形成相互连接的碳层状Al₂O₃陶瓷。本研究中使用的Al₂O₃微粒是通过对平均直径为150nm的纳米级Al₂O₃纳米颗粒进行造粒获得的。然后，使用造粒后的Al₂O₃和CNP通过静电组装法制备CNP-Al₂O₃复合材料。使用固定量的CNP，研究了CNP在造粒后的Al₂O₃表面的修饰情况，作为一次粒径和覆盖百分比的函数。值得注意的是，在Al₂O₃界面处获得了一层类似晶界的相互连接的碳颗粒层。还研究了在Al₂O₃颗粒上具有不同粒径和CNP覆盖率的样品的力学性能，这表明通过复合陶瓷材料的微观结构设计来控制力学性能是有可能的。