Novel Tribometer for Coated Self-Lubricating Spherical Plain Bearings in a Vacuum
| Autor: | Zhen Li, Zhinan Zhang, Qingsong Yong, Guozheng Ma, Aobo Wei, Haidou Wang |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Lubricants, Vol 10, Iss 11, p 291 (2022) |
| Druh dokumentu: | article |
| ISSN: | 10110291 2075-4442 |
| DOI: | 10.3390/lubricants10110291 |
| Popis: | Coated self-lubricating spherical plain bearings (SSPBs) are a fairly key component of the space-swing mechanism. To examine the operation status and tribological properties of coated SSPBs, a tribometer with a temperature control module in a vacuum condition was developed. The tribometer was mainly composed of a fixture system, reciprocating rotational motion system, environment control system, etc. First, the tribometer was verified with the self-made hydrogenated diamond-like carbon (H-DLC) SSPBs. The sensor signals indicated that the tribometer conformed to the design specifications. Then, the influence of friction heat on the tribological properties of H-DLC SSPBs was analyzed. The results showed that friction torque and temperature increased with the overall test time. Although the temperature had reached 48 °C, the frictional heat had little effect on the H-DLC SSPBs’ lifespans. The damage mechanism of H-DLC SSPBs was dominated by abrasive wear and fatigue wear in vacuum conditions. |
| Databáze: | Directory of Open Access Journals |
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