The tribological behaviors of the surfaces lubricated by polyaklyiene glycol and polyolester oils in carbon dioxide environment
- Authors
- Oh, SD[Oh, Se-Doo]; Ahn, TS[Ahn, Tae-Shik]; Ch, SO[Ch, Sung-Oug]; Lee, YZ[Lee, Young-Ze]
- Issue Date
- 2006
- Publisher
- TRANS TECH PUBLICATIONS LTD
- Keywords
- natural refrigerant; carbon dioxide; coating; rotary compressor
- Citation
- ADVANCED NONDESTRUCTUVE EVALUATION I, PTS 1 AND 2, PROCEEDINGS, v.321-323, pp.1548 - 1551
- Indexed
- SCIE
SCOPUS
- Journal Title
- ADVANCED NONDESTRUCTUVE EVALUATION I, PTS 1 AND 2, PROCEEDINGS
- Volume
- 321-323
- Start Page
- 1548
- End Page
- 1551
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/89097
- ISSN
- 1013-9826
- Abstract
- The carbon dioxide (CO2) is investigated as an alternative refrigerant to replace HFC (hydro fluorocarbon) refrigerants in refrigerators and air conditioning systems due to the environmental concerns. Because new compressors with the carbon dioxide are going to be operated under the high pressure, the tribology of sliding surfaces in the compressor becomes very important. To develop new compressors, especially rotary type, the friction and wear characteristics of sliding surfaces between a vane and a roller in the rotary compressor were evaluated in this paper. Several hard coatings, such as TiN, CrN, and WC/C, were applied on vane surfaces in order to improve the tribological characteristics, and their performances were evaluated experimentally. The vane-on-disk type sliding tests were carried out under the various sliding speeds, normal loads, and carbon dioxide pressures with an exclusive high pressure wear tester. From the tests wear volume of vane surfaces applied various coatings were compared. During the tests coefficients of friction and surface temperatures were monitored. Test results showed that WC/C coatings showed good tribological properties. TiN and CrN coated vanes showed good wear resistance properties but produced high friction.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - Engineering > School of Mechanical Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.