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Tribological and Corrosive Investigations in Advanced Nanomaterials

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A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Corrosion".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 10327

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Prof. Dr. Michal Cichomski

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Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Lodz, Poland
Interests: nanomaterials; thin layers; self-assembled monolayers; surface modification of nanomaterials; characterization of thin layers; nanometrology; nanomechanics; nanotribology; adhesion; scanning probe microscopy; wetting of surfaces; biomimetics
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Dear Colleagues,

The development of modern technologies, such as biotechnologies, electronics, and information technologies, requires the miniaturization of devices and systems while increasing their efficiency, reaction time, and longevity. In order to meet these requirements, new functional surface materials possessing good mechanical, tribological, anti-corrosion, and protective parameters, which reduce the wear of these devices, are being investigated. In particular, low-friction and high-wear-resistant materials are interesting, as every improvement in these properties ensures a beneficial effect on durability. This Special Issue focuses on multifunctional materials obtained with adequate single, multilayer, and nanocomposite coatings using chemical or physical deposition techniques. Moreover, scientific topics include the nano/micro tribological, anti-corrosion surface engineering of materials and the characterization of thin layers.

Prof. Dr. Michal Cichomski
Guest Editor

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Keywords

nanomaterials
thin layers
mechanical properties
nano-/microtribology
corrosive investigations
wear-resistant

Published Papers (5 papers)

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Research

18 pages, 7199 KiB

Open AccessArticle

Abrasive Wear, Scuffing and Rolling Contact Fatigue of DLC-Coated 18CrNiMo7-6 Steel Lubricated by a Pure and Contaminated Gear Oil

by Waldemar Tuszyński, Remigiusz Michalczewski, Edyta Osuch-Słomka, Andrzej Snarski-Adamski, Marek Kalbarczyk, Andrzej N. Wieczorek and Jakub Nędza

Materials 2021, 14(22), 7086; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14227086 - 22 Nov 2021

Cited by 7 | Viewed by 1885

Abstract

Due to extreme working conditions of mining conveyors, which contaminate gear oil with solid particles, their transmissions are exposed to intensive abrasion, scuffing, and even rolling contact fatigue (pitting). These effects shorten gear life. To prevent their occurrence, a wear-resistant coating can be deposited on gear teeth. The resistance to abrasive wear, scuffing, and pitting was investigated and reported in the article. Simple, model specimens were used. Abrasive wear and scuffing were tested using a pin-and-vee-block tribosystem in sliding contact. A cone–three-ball rolling tribosystem was employed to test pitting. The material of the test specimens (pins, vee blocks, cones) was 18CrNiMo7-6 case-hardened steel. Two types of DLC (Diamond-like Coatings) coatings were tested, W-DLC and W-DLC/CrN. The vee blocks and cones were coated. Two industrial gear oils were selected to lubricate the specimens: one with a mineral and one with a synthetic PAO (polyalphaolephine) base, as pure oil or contaminated with solid particles from a coal mine. The results show that, to minimize the tendency to abrasion, scuffing, and pitting of specimens made of 18CrNiMo7-6 steel, the W-DLC/CrN coating should be deposited. This coating also gives very good protection when the lubricating oil is contaminated. Full article

(This article belongs to the Special Issue Tribological and Corrosive Investigations in Advanced Nanomaterials)

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21 pages, 1817 KiB

Open AccessArticle

Modification of the Properties of Polymer Composites in a Constant Magnetic Field Environment

by Ewa Miękoś, Michał Cichomski, Marek Zieliński, Tomasz Klepka, Dariusz Sroczyński and Anna Fenyk

Materials 2021, 14(14), 3806; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14143806 - 07 Jul 2021

Cited by 8 | Viewed by 1616

Abstract

In this paper, polymer composites based on polylactide (PLA) and epoxy resin (Epidian 5) were studied in terms of the influence of magnetic induction on their changes in physicochemical properties. The composites contained admixtures in the form of magnetite (Fe₃O₄) and crystalline cellulose (Avicel PH-1010) in the amount of 10%, 20%, and 30% by weight and starch in the amount of 10%. The admixtures of cellulose and starch were intended to result in the composites becoming biodegradable biopolymers to some extent. Changes in physical and chemical properties due to the impact of a constant magnetic field with a magnetic induction value B = 0.5 T were observed. The changes were observed during tests of tensile strength, bending, impact strength, water absorbency, frost resistance, chemical resistance to acids and bases, as well as through SEM microscopy and with studies of the composition of the composites that use the EDS method and of their structure with the XRD method. Based on the obtained results, it was found that the magnetic induction value changes the properties of composites. This therefore acts as one method of receiving new alternative materials, the degradation of which in the environment would take far less time. Full article

(This article belongs to the Special Issue Tribological and Corrosive Investigations in Advanced Nanomaterials)

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17 pages, 4810 KiB

Open AccessArticle

Comparison of the Physicochemical Properties of Carboxylic and Phosphonic Acid Self-Assembled Monolayers Created on a Ti-6Al-4V Substrate

by Michal Cichomski, Milena Prowizor, Dorota Anna Kowalczyk, Andrzej Sikora, Damian Batory and Mariusz Dudek

Materials 2020, 13(22), 5137; https://0-doi-org.brum.beds.ac.uk/10.3390/ma13225137 - 14 Nov 2020

Cited by 3 | Viewed by 1954

Abstract

This study compared the tribological properties in nano- and millinewton load ranges of Ti‑6Al-4V surfaces that were modified using self-assembled monolayers (SAMs) of carboxylic and phosphonic acids. The effectiveness of the creation of SAMs with the use of the liquid phase deposition (LPD) technique was monitored by the contact angle measurement, the surface free energy (SFE) calculation, X-ray photoelectron spectroscopy (XPS), and Fourier-transform infrared spectroscopy (FTIR) measurements. The obtained results indicated that more stable and well-ordered layers, which were characterized by the lowest values of the coefficient of friction, adhesion, and wear rate, were obtained using phosphonic acid as a surface modifier. Based on the obtained results, it was found that the Ti-6Al-4V alloy modified by phosphonic acid would be the most advantageous for practical applications, especially in micro- and nanoelectromechanical systems (MEMS/NEMS). Full article

(This article belongs to the Special Issue Tribological and Corrosive Investigations in Advanced Nanomaterials)

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15 pages, 3700 KiB

Open AccessArticle

The Effect of Physicochemical Properties of Perfluoroalkylsilanes Solutions on Microtribological Features of Created Self-Assembled Monolayers

by Michał Cichomski, Ewelina Borkowska, Milena Prowizor, Damian Batory, Anna Jedrzejczak and Mariusz Dudek

Materials 2020, 13(15), 3357; https://0-doi-org.brum.beds.ac.uk/10.3390/ma13153357 - 29 Jul 2020

Cited by 3 | Viewed by 2122

Abstract

The presented article shows the influence of concentration of perfluoroalkylsilanes in solutions on tribological properties of self-assembled monolayers (SAMs) deposited on three surfaces with different silicon content in the millinewton load range. The SAMs were created using the liquid phase deposition (LPD) method with 1H, 1H, 2H, 2H-perfluorodecyltrichlorosilane (FDTS) and (3, 3, 3-trifluoropropyl) trichlorosilane (FPTS) solutions, for which viscosity and surface tension were estimated. Deposited layers were analyzed in terms of thickness, coverage, wettability, structure and coefficient of friction. The obtained results demonstrated that SAMs created on the silicon-incorporated diamond-like carbon (Si-DLC) coatings possess the best microtribological properties. Systems composed of perfluoroalkylsilane SAM structures deposited on Si-DLC coatings are highly promising candidates as material for microelectromechanical applications. Full article

(This article belongs to the Special Issue Tribological and Corrosive Investigations in Advanced Nanomaterials)

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16 pages, 3831 KiB

Open AccessArticle

Electrochemical Evaluation of the Compact and Nanotubular Oxide Layer Destruction under Ex Vivo Ti6Al4V ELI Transpedicular Screw Implantation

by Katarzyna Arkusz, Marta Nycz and Ewa Paradowska

Materials 2020, 13(1), 176; https://0-doi-org.brum.beds.ac.uk/10.3390/ma13010176 - 01 Jan 2020

Cited by 15 | Viewed by 2115

Abstract

Nano-engineered implants are a promising orthopedic implant modification enhancing bioactivity and integration. Despite the lack of destruction of an oxide layer confirmed in ex vivo and in vivo implantation, the testing of a microrupture of an anodic layer initiating immune-inflammatory reaction is still underexplored. The aim of this work was to form the compact and nanotubular oxide layer on the Ti6Al4V ELI transpedicular screws and electrochemical detection of layer microrupture after implantation ex vivo by the Magerl technique using scanning electron microscopy and highly sensitive electrochemical methods. For the first time, the obtained results showed the ability to form the homogenous nanotubular layer on an Ti6Al4V ELI screw, both in α and β-phases, with favorable morphology, i.e., 35 ÷ 50 ± 5 nm diameter, 1500 ± 100 nm height. In contrast to previous studies, microrupture and degradation of both form layers were observed using ultrasensitive electrochemical methods. Mechanical stability and corrosion protection of nanotubular layer were significantly better when compared to compact oxide layer and bare Ti6Al4V ELI. Full article

(This article belongs to the Special Issue Tribological and Corrosive Investigations in Advanced Nanomaterials)

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