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Process optimization to improve low friction and wear resistance of compressor solid lubricating coatings.

Number: 1184

Author(s) : PARK Y., CHOI Y., PARK S. J., CHOI S. G., KIM J. H., HEO I. K., YOO J., PARK J. Y.

Summary

The main causes of compressor performance efficiency and noise reduction are mostly caused by mechanical friction and vibration between parts. This friction and vibration can damage internal parts and cause them to break down, causing compressors and air conditioners to malfunction. In addition, thermal deformation and heavy loads that occur when compressing low-temperature, low-pressure refrigerant into high-temperature, high-pressure gas are also causes of compressor damage. To solve this problem, excellent heat-resistant solid lubricating coatings used in engineering applications such as low friction under medium load, air conditioning, and refrigeration compressors are being applied through deposition of molybdenum disulfide, graphite, and PTFE-based coatings. Solid lubricants such as molybdenum disulfide (MoS2), graphite, and PTFE-based coatings have been shown to have low friction, high wear resistance, and, unlike DLC coatings, are not significantly affected by the environment. Although coating wear increases significantly at high contact pressures, the wear particles generated appear to have a beneficial role in overall wear performance. Due to their excellent tribological behavior under various experimental conditions, the coatings tested in this study can be used in compressor systems and other engineering applications. Critical to compressor development is predicting friction and wear between surfaces in relative motion. In this study, the tribological properties of the sliding surface were investigated using various types of compressor parts simulation specimens. Friction tests were performed under various contact conditions including contact pressure and speed. It was confirmed that the friction and wear characteristics were different depending on the manufacturing process conditions of the solid lubricant coating, and friction and wear tests were conducted depending on the coating according to hardening temperature and time and the presence or absence of post-treatment to find the optimal coating conditions.

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  • Original title: Process optimization to improve low friction and wear resistance of compressor solid lubricating coatings.
  • Record ID : 30033059
  • Languages: English
  • Subject: Technology
  • Source: 2024 Purdue Conferences. 27th International Compressor Engineering Conference at Purdue.
  • Publication date: 2024/07/18

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