Next Article in Journal
Fracture Resistance of Monolithic Zirconia Crowns in Implant Prostheses in Patients with Bruxism
Previous Article in Journal
Performances of Cement Mortar Incorporating Superabsorbent Polymer (SAP) Using Different Dosing Methods
Previous Article in Special Issue
Comparison of Self-Etching Ceramic Primer and Conventional Silanization to Bond Strength in Cementation of Fiber Reinforced Composite Post
Article Menu
Issue 10 (May-2) cover image

Export Article

Open AccessArticle

Effect of CNT Contents on the Microstructure and Properties of CNT/TiMg Composites

School of Materials Science and Engineering, Anhui University of Technology, Ma’anshan 243002, China
Department of Mechanical Engineering, Industrial & Commercial of Anhui University of Technology, Dangtu 243100, China
Authors to whom correspondence should be addressed.
Materials 2019, 12(10), 1620;
Received: 23 April 2019 / Revised: 14 May 2019 / Accepted: 15 May 2019 / Published: 17 May 2019
PDF [1973 KB, uploaded 17 May 2019]


Carbon nanotubes (CNTs), dispersed in absolute ethanol, were evenly mixed into Ti/MgH2 powders by wet milling. Then, we applied the vacuum hot-pressed sinteringmethod to the CNTs/TiMg composite materials. An optical microscope (OM), X-ray diffraction (XRD), scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) and a field emission scanning electron microscope (FESEM) were used for the microstructure observation and phase analysis of samples. The mechanical properties were measured via the micro-vickers hardness. The results show that the main phases in the composites were Ti, Mg and C. Meanwhile, a small amount of Ti-Mg solid solution phase was also found. The cross-section morphology of the composites shows that the melted magnesium fills the grain interface during extrusion and that the composites have a better compactness.The microstructures of the composites have been greatly refined as the CNT contents increased. The structure of the composites was further refined when 0.5 wt.% CNTs were added. The fracture surface is obviously a ductile fracture. The microhardness increases obviously with the CNT content increasing. When the content of the CNTs is 1.0 wt.%, the microhardness of the composites reaches 232 HV, which is 24% higher than that of the matrix. View Full-Text
Keywords: carbon nanotubes; MgH2; hot pressing sintering; Ti-Mg alloy carbon nanotubes; MgH2; hot pressing sintering; Ti-Mg alloy

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Yuan, X.; Zhu, H.; Ji, H.; Zhang, Y. Effect of CNT Contents on the Microstructure and Properties of CNT/TiMg Composites. Materials 2019, 12, 1620.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top