Abstract
Several reports show that lubrication improves the sliding properties of ceramics. This paper compares dry and lubricated wear test results. Test materials were alumina, silicon carbide and steel, all sliding on steel. Dry tests were performed with a pin-on-disk machine and the lubricated tests with a journal bearing test machine under conditions of boundary lubrication.
In dry wear tests, material transfer from one of the surfaces to the other was found to occur while in lubricated tests this was either reduced or inhibited. Wear rates during lubricated tests were about three orders of magnitude smaller than during unlubricated tests.
The coefficient μ of friction at the end of a test was found to lie in the range μ = 0.37–0.68 for different sliding pairs in the dry tests while in lubricated tests it remained at μ = 0.02–0.03, showing the benefits of lubrication when applicable.
In dry wear tests, material transfer from one of the surfaces to the other was found to occur while in lubricated tests this was either reduced or inhibited. Wear rates during lubricated tests were about three orders of magnitude smaller than during unlubricated tests.
The coefficient μ of friction at the end of a test was found to lie in the range μ = 0.37–0.68 for different sliding pairs in the dry tests while in lubricated tests it remained at μ = 0.02–0.03, showing the benefits of lubrication when applicable.
| Original language | English |
|---|---|
| Pages (from-to) | 407-413 |
| Journal | Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing |
| Volume | 109 |
| DOIs | |
| Publication status | Published - Mar 1989 |
| MoE publication type | A1 Journal article-refereed |
| Event | Symposium on Ceramic Materials Research at the E-MRS Spring Meeting - Strasbourg, France Duration: 31 May 1988 → 2 Jun 1988 |