Lubricity of SrxCa1-xCuOy powders during oil lubrication
Suzuki, M; Sasaki, M; Hironaka, S
| HERO ID | 4969024 |
|---|---|
| In Press | No |
| Year | 1998 |
| Title | Lubricity of SrxCa1-xCuOy powders during oil lubrication |
| Authors | Suzuki, M; Sasaki, M; Hironaka, S |
| Journal | Ceramic Society of Japan. Journal |
| Volume | 106 |
| Issue | 8 |
| Page Numbers | 808-810 |
| Abstract | Double oxide,SrxCa1-xCuOy has a layered structure in which Ca(Sr) is sandwiched between CuO2 layers. This crystal structure is expected to give low friction due to its low shear strength between laminas, In this work, various kind of SrxCa1-xCuOy with x=0.0 to 1.0 were prepared from SrCO3, CaCO3 and CuO by sintering method. The compositions of these products were examined by X-ray diffraction. The sample powders were blended in oil (squalane) and grease, and their load carrying capacities were evaluated by a cylinder-on-plate type tribometer and a four-ball machine, respectively. As a result of the tests, SrxCa1-xCuOy with x=0.0, 0.14, 0.90 and 1.0 showed low friction (about 0.1) and high load carrying capacity (4900 N). It was found from SEM and EPMA results that the worn surface was smooth, and that a thin solid lubricating him containing Ca, Sr and Cu was formed on the rubbing counterface. Also, the oxides with x=0.9 and 1.0 showed superior properties under extreme pressure in four-ball machine testing. |
| Doi | 10.2109/jcersj.106.808 |
| Wosid | WOS:000075512400014 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | solid lubricant; lubricity; infinite layer structure; double oxides; extreme environment |