Comparative Studies on the Dry Sliding Behavior of a Low-Metallic Friction Material with the Addition of Graphite and Exfoliated g-C<sub>3</sub>N<sub>4</sub>
This study compares the effect of the addition of two types of lubricants on the dry sliding behavior of a simplified Cu-free phenolic resin-based composite material. The lubricants were commercial graphite and exfoliated graphitic carbon nitride (codenamed: TEX6). The graphite particles were rounde...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-02-01
|
| Series: | Lubricants |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4442/10/2/27 |
| _version_ | 1797478656902168576 |
|---|---|
| author | Priyadarshini Jayashree Vlastimil Matějka Kryštof Foniok Giovanni Straffelini |
| author_facet | Priyadarshini Jayashree Vlastimil Matějka Kryštof Foniok Giovanni Straffelini |
| author_sort | Priyadarshini Jayashree |
| collection | DOAJ |
| description | This study compares the effect of the addition of two types of lubricants on the dry sliding behavior of a simplified Cu-free phenolic resin-based composite material. The lubricants were commercial graphite and exfoliated graphitic carbon nitride (codenamed: TEX6). The graphite particles were rounded and of ‘flaky’ character. The TEX6 particles were not only flaky, but also irregular in shape, and ‘fluffy’. Both lubricants were added individually in the basic formulation and subjected to dry sliding tests on pin-on-disc testing equipment in mild conditions and against a grey cast-iron counterface. The tests with TEX6 observed a stable steady state in the friction coefficient (CoF) with lower scatter and lower average friction coefficient and pin wear magnitude when compared to samples containing graphite. Additionally, the worn surfaces of the TEX6-containing samples had extremely smooth, compact, and continuous secondary plateau coverage when compared to the graphite-containing samples. The counterface paired with the TEX6-containing samples observed much lower abrasive action compared to the graphite-containing samples. Through the wear testing and further evaluation of the secondary plateaus, the possible addition of TEX6 as a lubricant in friction material composition was explained, making it a promising component for automotive braking applications. |
| first_indexed | 2024-03-09T21:34:50Z |
| format | Article |
| id | doaj.art-f191503363a442deb594ffd69594698f |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-03-09T21:34:50Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-f191503363a442deb594ffd69594698f2023-11-23T20:47:44ZengMDPI AGLubricants2075-44422022-02-011022710.3390/lubricants10020027Comparative Studies on the Dry Sliding Behavior of a Low-Metallic Friction Material with the Addition of Graphite and Exfoliated g-C<sub>3</sub>N<sub>4</sub>Priyadarshini Jayashree0Vlastimil Matějka1Kryštof Foniok2Giovanni Straffelini3Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, ItalyDepartment of Chemistry, Faculty of Materials Science and Technology, VŠB—Technical University of Ostrava, 17. Listopadu 2172/15, 70833 Ostrava, Czech RepublicDepartment of Chemistry, Faculty of Materials Science and Technology, VŠB—Technical University of Ostrava, 17. Listopadu 2172/15, 70833 Ostrava, Czech RepublicDepartment of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, ItalyThis study compares the effect of the addition of two types of lubricants on the dry sliding behavior of a simplified Cu-free phenolic resin-based composite material. The lubricants were commercial graphite and exfoliated graphitic carbon nitride (codenamed: TEX6). The graphite particles were rounded and of ‘flaky’ character. The TEX6 particles were not only flaky, but also irregular in shape, and ‘fluffy’. Both lubricants were added individually in the basic formulation and subjected to dry sliding tests on pin-on-disc testing equipment in mild conditions and against a grey cast-iron counterface. The tests with TEX6 observed a stable steady state in the friction coefficient (CoF) with lower scatter and lower average friction coefficient and pin wear magnitude when compared to samples containing graphite. Additionally, the worn surfaces of the TEX6-containing samples had extremely smooth, compact, and continuous secondary plateau coverage when compared to the graphite-containing samples. The counterface paired with the TEX6-containing samples observed much lower abrasive action compared to the graphite-containing samples. Through the wear testing and further evaluation of the secondary plateaus, the possible addition of TEX6 as a lubricant in friction material composition was explained, making it a promising component for automotive braking applications.https://www.mdpi.com/2075-4442/10/2/27graphitic carbon nitridegraphitelubricantwearfrictionlow-metallic friction materials |
| spellingShingle | Priyadarshini Jayashree Vlastimil Matějka Kryštof Foniok Giovanni Straffelini Comparative Studies on the Dry Sliding Behavior of a Low-Metallic Friction Material with the Addition of Graphite and Exfoliated g-C<sub>3</sub>N<sub>4</sub> Lubricants graphitic carbon nitride graphite lubricant wear friction low-metallic friction materials |
| title | Comparative Studies on the Dry Sliding Behavior of a Low-Metallic Friction Material with the Addition of Graphite and Exfoliated g-C<sub>3</sub>N<sub>4</sub> |
| title_full | Comparative Studies on the Dry Sliding Behavior of a Low-Metallic Friction Material with the Addition of Graphite and Exfoliated g-C<sub>3</sub>N<sub>4</sub> |
| title_fullStr | Comparative Studies on the Dry Sliding Behavior of a Low-Metallic Friction Material with the Addition of Graphite and Exfoliated g-C<sub>3</sub>N<sub>4</sub> |
| title_full_unstemmed | Comparative Studies on the Dry Sliding Behavior of a Low-Metallic Friction Material with the Addition of Graphite and Exfoliated g-C<sub>3</sub>N<sub>4</sub> |
| title_short | Comparative Studies on the Dry Sliding Behavior of a Low-Metallic Friction Material with the Addition of Graphite and Exfoliated g-C<sub>3</sub>N<sub>4</sub> |
| title_sort | comparative studies on the dry sliding behavior of a low metallic friction material with the addition of graphite and exfoliated g c sub 3 sub n sub 4 sub |
| topic | graphitic carbon nitride graphite lubricant wear friction low-metallic friction materials |
| url | https://www.mdpi.com/2075-4442/10/2/27 |
| work_keys_str_mv | AT priyadarshinijayashree comparativestudiesonthedryslidingbehaviorofalowmetallicfrictionmaterialwiththeadditionofgraphiteandexfoliatedgcsub3subnsub4sub AT vlastimilmatejka comparativestudiesonthedryslidingbehaviorofalowmetallicfrictionmaterialwiththeadditionofgraphiteandexfoliatedgcsub3subnsub4sub AT krystoffoniok comparativestudiesonthedryslidingbehaviorofalowmetallicfrictionmaterialwiththeadditionofgraphiteandexfoliatedgcsub3subnsub4sub AT giovannistraffelini comparativestudiesonthedryslidingbehaviorofalowmetallicfrictionmaterialwiththeadditionofgraphiteandexfoliatedgcsub3subnsub4sub |