Modeling Wear and Friction Regimes on Ceramic Materials with Positive and Negative Thermal Expansion
Computer modeling of rubbing between two surfaces with microasperities capable of expanding or contracting under conditions of frictional heating (i.e., possessing either positive and negative coefficient of thermal expansion (CTE)) allowed for the identification of wear-and-friction regimes on mode...
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| Format: | Article |
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MDPI AG
2023-09-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/11/9/414 |
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| author | Aleksandr S. Grigoriev Evgeny V. Shilko Andrey I. Dmitriev Sergei Y. Tarasov |
| author_facet | Aleksandr S. Grigoriev Evgeny V. Shilko Andrey I. Dmitriev Sergei Y. Tarasov |
| author_sort | Aleksandr S. Grigoriev |
| collection | DOAJ |
| description | Computer modeling of rubbing between two surfaces with microasperities capable of expanding or contracting under conditions of frictional heating (i.e., possessing either positive and negative coefficient of thermal expansion (CTE)) allowed for the identification of wear-and-friction regimes on model ceramic materials. Assuming that no adhesion was involved in the interaction between asperities, two wear regimes—i.e., wear-free and continuous wear—have been revealed in both materials as dependent on the applied normal stress level and sliding velocity. The effect of the normal load on wear rate was similar for both positive and negative thermal expansion ceramics. Sliding velocity has a qualitatively different effect on the wear of materials with either positive or negative thermal expansion. The results indicated that the feasibility of reconstructing wear maps was common for both positive and negative CTE ceramics in terms of dimensionless mechanical and thermophysical characteristics. |
| first_indexed | 2024-03-10T22:32:11Z |
| format | Article |
| id | doaj.art-94e5256e3c084e8daed13c5b372c94d8 |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-03-10T22:32:11Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-94e5256e3c084e8daed13c5b372c94d82023-11-19T11:40:09ZengMDPI AGLubricants2075-44422023-09-0111941410.3390/lubricants11090414Modeling Wear and Friction Regimes on Ceramic Materials with Positive and Negative Thermal ExpansionAleksandr S. Grigoriev0Evgeny V. Shilko1Andrey I. Dmitriev2Sergei Y. Tarasov3Institute of Strength Physics and Materials Science of Siberian Branch Russian Academy of Sciences (ISPMS SB RAS), 2/4, pr. Akademicheskii, 634055 Tomsk, RussiaInstitute of Strength Physics and Materials Science of Siberian Branch Russian Academy of Sciences (ISPMS SB RAS), 2/4, pr. Akademicheskii, 634055 Tomsk, RussiaInstitute of Strength Physics and Materials Science of Siberian Branch Russian Academy of Sciences (ISPMS SB RAS), 2/4, pr. Akademicheskii, 634055 Tomsk, RussiaInstitute of Strength Physics and Materials Science of Siberian Branch Russian Academy of Sciences (ISPMS SB RAS), 2/4, pr. Akademicheskii, 634055 Tomsk, RussiaComputer modeling of rubbing between two surfaces with microasperities capable of expanding or contracting under conditions of frictional heating (i.e., possessing either positive and negative coefficient of thermal expansion (CTE)) allowed for the identification of wear-and-friction regimes on model ceramic materials. Assuming that no adhesion was involved in the interaction between asperities, two wear regimes—i.e., wear-free and continuous wear—have been revealed in both materials as dependent on the applied normal stress level and sliding velocity. The effect of the normal load on wear rate was similar for both positive and negative thermal expansion ceramics. Sliding velocity has a qualitatively different effect on the wear of materials with either positive or negative thermal expansion. The results indicated that the feasibility of reconstructing wear maps was common for both positive and negative CTE ceramics in terms of dimensionless mechanical and thermophysical characteristics.https://www.mdpi.com/2075-4442/11/9/414ceramicsnegative thermal expansionpositive thermal expansionwear-freemodelingsurface roughness |
| spellingShingle | Aleksandr S. Grigoriev Evgeny V. Shilko Andrey I. Dmitriev Sergei Y. Tarasov Modeling Wear and Friction Regimes on Ceramic Materials with Positive and Negative Thermal Expansion Lubricants ceramics negative thermal expansion positive thermal expansion wear-free modeling surface roughness |
| title | Modeling Wear and Friction Regimes on Ceramic Materials with Positive and Negative Thermal Expansion |
| title_full | Modeling Wear and Friction Regimes on Ceramic Materials with Positive and Negative Thermal Expansion |
| title_fullStr | Modeling Wear and Friction Regimes on Ceramic Materials with Positive and Negative Thermal Expansion |
| title_full_unstemmed | Modeling Wear and Friction Regimes on Ceramic Materials with Positive and Negative Thermal Expansion |
| title_short | Modeling Wear and Friction Regimes on Ceramic Materials with Positive and Negative Thermal Expansion |
| title_sort | modeling wear and friction regimes on ceramic materials with positive and negative thermal expansion |
| topic | ceramics negative thermal expansion positive thermal expansion wear-free modeling surface roughness |
| url | https://www.mdpi.com/2075-4442/11/9/414 |
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