Effect of sp<sup>3</sup>–sp<sup>2</sup> Transformation on the Wear Rate of the DLC Coating
Based on the methods of non-equilibrium thermodynamics, it was found that the implementation of spontaneous processes with positive entropy production during friction leads to an increase in the wear intensity. Non-spontaneous processes with negative entropy production lead to a decrease in wear int...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-05-01
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| Series: | Lubricants |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4442/10/5/85 |
| Summary: | Based on the methods of non-equilibrium thermodynamics, it was found that the implementation of spontaneous processes with positive entropy production during friction leads to an increase in the wear intensity. Non-spontaneous processes with negative entropy production lead to a decrease in wear intensity. The tribological characteristics of diamond-like carbon (DLC) with different silicon content were studied. The wear intensity practically does not correlate with the friction coefficient. It is shown that DLC with the highest content of diamond-like inclusions (sp<sup>3</sup>) in the coating has the highest wear rate. In the same DLC, the most intense sp<sup>3</sup>–sp<sup>2</sup> transformation during friction was observed. The sp<sup>3</sup>–sp<sup>2</sup> transformation is a spontaneous process. |
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| ISSN: | 2075-4442 |