| Autor: |
Robert Waltman, Connie Wiita |
| Jazyk: |
angličtina |
| Rok vydání: |
2015 |
| Předmět: |
|
| Zdroj: |
Tribology Online, Vol 10, Iss 4, Pp 262-272 (2015) |
| Druh dokumentu: |
article |
| ISSN: |
1881-2198 |
| DOI: |
10.2474/trol.10.262 |
| Popis: |
The interfacial properties of perfluoropolyether (PFPE) films having the [(CF2)nO] main chain with n = 1.5, 3 and 4, were systematically compared on carbon surfaces. The monolayer thickness decreases with increasing n, indicating that stiffer chains (larger n) lie flatter on the surface. The surface energy-derived disjoining pressure also increased with increasing n. Spin-stand tribological experiments indicated that clearance (slider-disk spacing) increased and PFPE lubricant pick-up decreased with increasing disjoining pressure and main chain stiffness. Slider wear rate increased with decreasing PFPE coverage and increasing main chain stiffness. Structure-property correlations are developed and discussed. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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