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Research on Tribology and Anti-wear Behavior of Metals and Alloys

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A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: closed (10 December 2023) | Viewed by 3369

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Special Issue Editors

Prof. Dr. Yongguang Wang

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Guest Editor

Department of Mechanical and Electric Engineering, Soochow University, Suzhou, China
Interests: coating; tribology; CMP; contact mechanics
Special Issues, Collections and Topics in MDPI journals

Dr. Ning Li

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Guest Editor

Xingzhi College, Zhejiang Normal University, Jinhua, China
Interests: wear-resistant materials; bio-materials; material synthesis and modification; ultra-precision processing technology

Special Issue Information

Dear Colleagues,

Wear is a complex dynamic process in various production processes, where 30–50% of energy is consumed through friction and wear. Wear-resistant materials are a large class of novel materials with special electrical, magnetic, optical, acoustic, thermal, mechanical, chemical, and biological functions. They are important basic materials in high-tech fields, such as information technology, biotechnology, energy technology, and national defence construction. They also play a very important role in transforming some traditional industries. Wear is one of the main forms of workpiece failure, resulting in a large amount of energy and raw material consumption.

We invite you contribute to this Special Issue by submitting manuscripts relevant to the above topics. Original articles, communications, and reviews are all welcome.

Prof. Dr. Yongguang Wang
Dr. Ning Li
Guest Editors

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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. Materials 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 2600 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

wear-resistant materials
tribological behaviour
material modification
biofriction materials
ultra-precision processing technology

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Published Papers (3 papers)

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Research

18 pages, 12223 KiB

Open AccessArticle

The Influence of the Geometry of Movement during the Friction Process on the Change in the Tribological Properties of 30CrNiMo8 Steel in Contact with a G40 Steel Ball

by Marcel Kohutiar, Michal Krbata, Jana Escherova, Maros Eckert, Pavol Mikus, Milan Jus, Miroslav Polášek, Róbert Janík and Andrej Dubec

Materials 2024, 17(1), 127; https://doi.org/10.3390/ma17010127 - 26 Dec 2023

Cited by 1 | Viewed by 835

Abstract

Experiments with changes in motion geometry can provide valuable data for engineering and development purposes, allowing a better understanding of the influence of tribological factors on the performance and service life of joints. The presented subject article focused on the experimental investigation of the influence of the geometry of the movement of the friction process on the change in the tribological properties of 30CrNiMo8 steel. The friction process was carried out without the use of a lubricant in contact with a steel ball of G40 material with a diameter of 4.76 mm. The steel ball performed two types of movement on the surface of the experimental material. The first method used was ball on disc, in which the ball moved reciprocally in an oval direction at an angle of 180° on a circumferential length of 35 mm at a speed of 5 mm/s. The second method consists of the same input parameters of the measurement, with the difference that the path along which the ball moved had a linear character. The load during the experiment was set at a constant value of 50 N with 1000 repetitions. The results show that with the ball on disc method, there was an increase in wear by 147% compared to the linear test method, which was approximately a coefficient of increase in wear of 2.468. EDS analysis pointed to the occurrence of oxidative wear that affected the resulting COF values, which were lower by 8% when using the ball on disc method due to a more uniform distribution of O and C on the surface of the friction groove where these elements acted as solid microlubricants. With the ball on disc method, defects in the form of microcracks occurred, which affected the reduction in the values of the depth of the affected area of microhardness. Full article

(This article belongs to the Special Issue Research on Tribology and Anti-wear Behavior of Metals and Alloys)

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13 pages, 3391 KiB

Open AccessArticle

Process Optimization of Polishing Titanium Alloy Material with a Pulsating Air Jet

by Lei Zhang, Chen Ding, Jianfa Bu, Zhirui Zhang, Yongguang Wang and Cheng Fan

Materials 2023, 16(20), 6813; https://doi.org/10.3390/ma16206813 - 23 Oct 2023

Viewed by 933

Abstract

Titanium alloy is a widely used metal material, which can be applied in fields such as healthcare, petroleum exploration, aerospace, etc. In this paper, a new method for polishing the titanium alloy by a pulsating air jet is proposed. Compared with traditional abrasive jet polishing, this method has the advantages of simple structure, low nozzle wear, and high polishing flexibility. The working principle and material removal mechanism of the pulsating air jet polishing (PAJP) are introduced. Combined with orthogonal experiments, range analysis and variance analysis were used to find out the influence degree of each process parameter on the PAJP of titanium alloy, and the optimal level of each parameter was found. Through the experiments, a prediction model of surface roughness was established by regression analysis, and the predicted value was compared with the measured value. The maximum relative error of the prediction model was 10.3%, and the minimum relative error was 1.1%. The average relative error was 6.2%. Full article

(This article belongs to the Special Issue Research on Tribology and Anti-wear Behavior of Metals and Alloys)

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17 pages, 5578 KiB

Open AccessArticle

Field and Laboratory Wear Tests of Machine Components Used for Renovation of Dirt Roads—A Case Study

by Jarosław Selech, Wiktor Majchrzycki and Dariusz Ulbrich

Materials 2023, 16(18), 6180; https://doi.org/10.3390/ma16186180 - 12 Sep 2023

Cited by 2 | Viewed by 948

Abstract

Renovation of dirt roads requires a reliable and durable work tool. This article includes the methodology of field and bench tests as well as the results of these tests and conclusions for cutters used for dirt road renovation. The main novelty of the research presented in this article was to determine the wear mechanisms occurring during field and laboratory tests, to determine the differences in wear levels and the cost of renovation of one kilometer of dirt road. Calculations of the efficiency of replacing these working elements and the cost of operating various cutters per km are also presented. The lowest mass loss was characterized by milling cutters Ø25 mm mounted on an expansion sleeve and amounted to 130 g. The dominant wear mechanism that was observed after the renovation of dirt roads was micro-scraping and micro-bruising. For this variant, the cost per 1 km of road renovation was also the lowest and amounted to about PLN 2. Full article

(This article belongs to the Special Issue Research on Tribology and Anti-wear Behavior of Metals and Alloys)

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