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Nanomaterials
Special Issues
Thermophysical and Tribological Properties of Nanomaterials
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Thermophysical and Tribological Properties of Nanomaterials

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: closed (10 November 2023) | Viewed by 3046

Special Issue Editors

Prof. Dr. Md Abdul Maleque

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Guest Editor
Advanced Materials & Surface Engg. Research Unit, Faculty of Engineering, International Islamic University Malaysia, Kuala Lumpur, Malaysia
Interests: sustainable composite materials; nano-coating technology; thermal properties of materials; materials development and characterization; nanoparticles
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Md Mustafizur Rahman

E-Mail Website
Guest Editor
Faculty of Mechanical and Automotive Engineering Technology at Universiti Malaysia Pahang, 26000 Pekan, Pahang, Malaysia
Interests: nanomaterials; nanohybrid materials; nanocomposites; nano-lubricants; nano-coolant for machining; tribology; multifunctional materials; surface treatments; sustainable manufacturing; vehicle health monitoring; materials for energy storage

Special Issue Information

Dear Colleagues,

Recent studies on the thermal properties of nanomaterials have found that such materials are relevant to many applications, including thermal and tribology. This has attracted the research community to study the introduction of matrix materials or lubricants to nanomaterials or nanoparticles to enhance their thermophysical and tribological properties; these attempts are termed as nanotribology. Therefore, we continue to explore the thermophysical and tribological properties of nanomaterials. The wide scope of nanomaterials research ranges from the development of nanophase change materials, nanolubricants, friction modifier, and anti-wear properties of nanomaterials to the synthesis and characterization of such materials for a wider range of applications. Thus, this Special Issue focuses on the “Thermophysical and Tribological Properties of Nanomaterials” in order to provide a dedicated platform to put forward recent ideas and findings in this particular area of research. Nanostructures play an important role in determining the thermophysical and tribological properties of materials. The scope of this Special Issue will cover the synthesis and characterization of various nanomaterials and applications relevant to wear, friction, and lubrication (known as tribology) with regards to their thermophysical and tribological properties. In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following: 1. Thermophysical properties of nanomaterials; 2. Nanophase change materials; 3. Nanolubricants; 4. Friction modifiers; 5. Anti-wear nanomaterials; 6. Nanotribology. 

Prof. Dr. Md Abdul Maleque
Prof. Dr. Md Mustafizur Rahman
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • thermophysical properties
  • nanophase change materials
  • nanolubricants
  • friction modifiers
  • anti-wear nanomaterials
  • nanotribology

Published Papers (3 papers)

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Research

9 pages, 2141 KiB  
Article
Nanotribological Characteristics of the Al Content of AlxGa1−xN Epitaxial Films
by Hua-Chiang Wen, Ssu-Kuan Wu, Cheng-Wei Liu, Jin-Ji Dai and Wu-Ching Chou
Nanomaterials 2023, 13(21), 2884; https://0-doi-org.brum.beds.ac.uk/10.3390/nano13212884 - 31 Oct 2023
Viewed by 735
Abstract
The nanotribological properties of aluminum gallium nitride (AlxGa1−xN) epitaxial films grown on low-temperature-grown GaN/AlN/Si substrates were investigated using a nanoscratch system. It was confirmed that the Al compositions played an important role, which was directly influencing the strength of [...] Read more.
The nanotribological properties of aluminum gallium nitride (AlxGa1−xN) epitaxial films grown on low-temperature-grown GaN/AlN/Si substrates were investigated using a nanoscratch system. It was confirmed that the Al compositions played an important role, which was directly influencing the strength of the bonding forces and the shear resistance. It was verified that the measured friction coefficient (μ) values of the AlxGa1−xN films from the Al compositions (where x = 0.065, 0.085, and 0.137) were in the range of 0.8, 0.5, and 0.3, respectively, for Fn = 2000 μN and 0.12, 0.9, and 0.7, respectively, for Fn = 4000 μN. The values of μ were found to decrease with the increases in the Al compositions. We concluded that the Al composition played an important role in the reconstruction of the crystallites, which induced the transition phenomenon of brittleness to ductility in the AlxGa1−xN system. Full article
(This article belongs to the Special Issue Thermophysical and Tribological Properties of Nanomaterials)
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14 pages, 5137 KiB  
Article
Assessment of the Tribological Performance of Electrospun Lignin Nanofibrous Web-Thickened Bio-Based Greases in a Nanotribometer
by María Borrego, Erik Kuhn, José E. Martín-Alfonso and José M. Franco
Nanomaterials 2023, 13(21), 2852; https://0-doi-org.brum.beds.ac.uk/10.3390/nano13212852 - 27 Oct 2023
Viewed by 734
Abstract
The tribological performance of novel bio-based lubricating greases thickened with electrospun lignin nanostructures was investigated in a nanotribometer using a steel–steel ball-on-disc configuration. The impact of electrospun nanofibrous network morphology on friction and wear is explored in this work. Different lignin nanostructures were [...] Read more.
The tribological performance of novel bio-based lubricating greases thickened with electrospun lignin nanostructures was investigated in a nanotribometer using a steel–steel ball-on-disc configuration. The impact of electrospun nanofibrous network morphology on friction and wear is explored in this work. Different lignin nanostructures were obtained with electrospinning using ethylcellulose or PVP as co-spinning polymers and subsequently used as thickeners in castor oil at concentrations of 10–30% wt. Friction and wear generally increased with thickener concentration. However, friction and wear decreased when using homogeneous bead-free nanofiber mats (with higher fiber diameter and lower porosity) rather than nanostructures dominated by the presence of particles or beaded fibers, which was favored by reducing the lignin:co-spinning polymer ratio. Full article
(This article belongs to the Special Issue Thermophysical and Tribological Properties of Nanomaterials)
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23 pages, 19528 KiB  
Article
Study of the Effect of ZnO Functionalization on the Performance of a Fully Formulated Engine Oil
by Marta Hernaiz, Iker Elexpe, Estíbaliz Aranzabe, Beatriz Fernández, Xana Fernández, Silvia Fernández, Martí Cortada-García and Andrés T. Aguayo
Nanomaterials 2023, 13(18), 2540; https://0-doi-org.brum.beds.ac.uk/10.3390/nano13182540 - 11 Sep 2023
Cited by 1 | Viewed by 843
Abstract
The automotive sector is demanding higher specifications to achieve maximum efficiency; in this sense a new generation of lubricants with higher thermo-oxidative stability and superior tribological properties is being explored. The formulation of nanolubricants based on the nature of different nanomaterials is one [...] Read more.
The automotive sector is demanding higher specifications to achieve maximum efficiency; in this sense a new generation of lubricants with higher thermo-oxidative stability and superior tribological properties is being explored. The formulation of nanolubricants based on the nature of different nanomaterials is one of the most recent approaches, with several gaps to cover, such as dispersion stability, related to the compatibility of proposed nanomaterials with conventional additives and baseoils used in lubricant formulation. This study evaluated the effect of ZnO nanomaterial dispersed in a commercial engine oil using two different approaches; the use of surfactant and nanomaterial surface functionalization to promote higher stability and lower cluster size. Experimental evidence shows a synergetic effect between the tribological protection mechanism and the antioxidant properties in the lubricant. The effect of nanoparticle cluster size, functionalization level, and nanomaterial content are presented. Full article
(This article belongs to the Special Issue Thermophysical and Tribological Properties of Nanomaterials)
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