Abstract
A complex of lanthanum dialkyldithiocarbamate and phenanthroline was synthesized, and its lubricating and antiwear behaviors as an additive in lithium grease were evaluated using a Timken tester with a SAE52100 steel ring sliding under an Al 2024 block. As a comparison, the wear behavior of a steel-on-steel system under the lubrication of the same grease was also investigated under the same test conditions. The protective film formed on the rubbed surface of aluminum was investigated by both XPS and AES. Results of friction and wear tests indicate that this rare earth complex possess good antiwear ability for aluminum, and its antiwear and friction reduction properties for the aluminum-on-steel system is even superior to that for the steel-on-steel system. The results of AES and XPS analyses illustrate that the prepared La complex as an additive in lithium grease forms a protective film containing lanthanum oxide, aluminum sulphide, and an organic compound containing sulfur and nitrogen on the rubbed surface of aluminum.
| Original language | English |
|---|---|
| Pages (from-to) | 153-156 |
| Number of pages | 4 |
| Journal | Wear |
| Volume | 199 |
| Issue number | 2 |
| DOIs | |
| State | Published - 15 Nov 1996 |
| Externally published | Yes |
Keywords
- Aluminum-on-steel
- Antiwear behavior
- Dialkydithiocarbamate-phenanthroline-La
- Grease additive
- XPS and AES analyses