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Tribological characteristics of perfluoropolyether liquid lubricants under sliding conditions in high vacuum
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Jones Jr., William R. Masuko, Masabumi Helmick, Larry S. |
| Copyright Year | 1993 |
| Description | Tribological characteristics of three PFPE's (Fomblin Z, Demnum, and Krytox) were studied under high vacuum using a four-ball apparatus with 440C steel specimens. Fomblin Z and Demnum exhibited initial scuffing-like high friction whereas Krytox did not. Steady state friction with Fomblin Z was the lowest among the three oils. Frictional values for Demnum and Krytox were almost the same. The lowest wear rate in air was provided by Krytox regardless of load, and low wear rates in vacuum at high load were achieved with Krytox and Demnum. Results are explained by reactivity and pressure-viscosity characteristics of the oils. |
| File Size | 407329 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930023163 |
| Archival Resource Key | ark:/13960/t85j2fm5p |
| Language | English |
| Publisher Date | 1993-07-01 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Lubricants Friction Factor Steady State High Vacuum Low Vacuum Perfluoro Compounds Reactivity Wear Lubricating Oils Steels Sliding Friction Vacuum Effects Loads Forces Tribology Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
