Effect of Sliding on the Relation of Tribofilm Thickness and Wear
The formation of tribofilms depends on temperature, shear stress, availability of the related chemical components, and characteristics of the near surface region, e.g., roughness and surface chemistry. The purpose of a tribofilm is to separate two sliding surfaces, thus preventing or limiting wear....
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/11/2/72 |
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| author | Martin Jech Maria L. Miranda-Medina Thomas Wopelka Christian Tomastik Carsten Gachot |
| author_facet | Martin Jech Maria L. Miranda-Medina Thomas Wopelka Christian Tomastik Carsten Gachot |
| author_sort | Martin Jech |
| collection | DOAJ |
| description | The formation of tribofilms depends on temperature, shear stress, availability of the related chemical components, and characteristics of the near surface region, e.g., roughness and surface chemistry. The purpose of a tribofilm is to separate two sliding surfaces, thus preventing or limiting wear. This research article aims for the first time at a systematic approach to elucidate on a fundamental level the interplay between tribofilm formation in particular thickness and wear behavior in the boundary and mixed lubrication regime. For this, load, temperature and sliding frequency as most relevant parameters are taken into consideration. For that purpose, a piston ring and cylinder liner configuration in an oscillating tribometer was chosen as a model system, with the top dead centre conditions in internal combustion engines of passenger cars as the testing regime. The amount of wear produced during the tribotests is continuously monitored by means of the Radio-Isotope Concentration (RIC) method. The tribofilm is investigated via Atomic Force Microscopy (AFM), Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDS) and X-ray Photoelectron Spectroscopy (XPS). The results clearly indicate that the impact of load on the wear rate can be seen in an Archard-like dependency, but changes of temperature and sliding velocity in the boundary to mixed lubrication regime imply a non-linear ratio between wear and tribofilm formation. |
| first_indexed | 2024-03-11T08:32:47Z |
| format | Article |
| id | doaj.art-bc4d776be02a42eeab55c15fffbefcd9 |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-03-11T08:32:47Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-bc4d776be02a42eeab55c15fffbefcd92023-11-16T21:43:58ZengMDPI AGLubricants2075-44422023-02-011127210.3390/lubricants11020072Effect of Sliding on the Relation of Tribofilm Thickness and WearMartin Jech0Maria L. Miranda-Medina1Thomas Wopelka2Christian Tomastik3Carsten Gachot4AC2T Research GmbH, Viktor-Kaplan-Strasse 2, 2700 Wiener Neustadt, AustriaAC2T Research GmbH, Viktor-Kaplan-Strasse 2, 2700 Wiener Neustadt, AustriaAC2T Research GmbH, Viktor-Kaplan-Strasse 2, 2700 Wiener Neustadt, AustriaAC2T Research GmbH, Viktor-Kaplan-Strasse 2, 2700 Wiener Neustadt, AustriaInstitute of Engineering Design and Product Development, Lehargasse 6, 1060 Vienna, AustriaThe formation of tribofilms depends on temperature, shear stress, availability of the related chemical components, and characteristics of the near surface region, e.g., roughness and surface chemistry. The purpose of a tribofilm is to separate two sliding surfaces, thus preventing or limiting wear. This research article aims for the first time at a systematic approach to elucidate on a fundamental level the interplay between tribofilm formation in particular thickness and wear behavior in the boundary and mixed lubrication regime. For this, load, temperature and sliding frequency as most relevant parameters are taken into consideration. For that purpose, a piston ring and cylinder liner configuration in an oscillating tribometer was chosen as a model system, with the top dead centre conditions in internal combustion engines of passenger cars as the testing regime. The amount of wear produced during the tribotests is continuously monitored by means of the Radio-Isotope Concentration (RIC) method. The tribofilm is investigated via Atomic Force Microscopy (AFM), Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDS) and X-ray Photoelectron Spectroscopy (XPS). The results clearly indicate that the impact of load on the wear rate can be seen in an Archard-like dependency, but changes of temperature and sliding velocity in the boundary to mixed lubrication regime imply a non-linear ratio between wear and tribofilm formation.https://www.mdpi.com/2075-4442/11/2/72piston ring–cylinder linerRadio-Isotope Concentration methodArchard’s wear modeltribofilm formation ZDDPtribotesting |
| spellingShingle | Martin Jech Maria L. Miranda-Medina Thomas Wopelka Christian Tomastik Carsten Gachot Effect of Sliding on the Relation of Tribofilm Thickness and Wear Lubricants piston ring–cylinder liner Radio-Isotope Concentration method Archard’s wear model tribofilm formation ZDDP tribotesting |
| title | Effect of Sliding on the Relation of Tribofilm Thickness and Wear |
| title_full | Effect of Sliding on the Relation of Tribofilm Thickness and Wear |
| title_fullStr | Effect of Sliding on the Relation of Tribofilm Thickness and Wear |
| title_full_unstemmed | Effect of Sliding on the Relation of Tribofilm Thickness and Wear |
| title_short | Effect of Sliding on the Relation of Tribofilm Thickness and Wear |
| title_sort | effect of sliding on the relation of tribofilm thickness and wear |
| topic | piston ring–cylinder liner Radio-Isotope Concentration method Archard’s wear model tribofilm formation ZDDP tribotesting |
| url | https://www.mdpi.com/2075-4442/11/2/72 |
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