Abstract
A potential high temperature lubricant cadmium tetrathiomolybdate (CdMoS4) was prepared. Thermal gravimetric analysis (TGA) was used to examine its thermal stability, and a high temperature ball-on-disc friction and wear tester was used to evaluate its lubricity for a Sialon ceramic/W18Cr4V steel pair from room temperature to 500°C. The worn surface of the W18Cr4V steel disc was analyzed with X-ray photoelectron spectroscopy (XPS) and X-ray diffraction. The results show that CdMoS4 has good lubricity from room temperature to 400°C, and the friction coefficient increases slowly with the increase of temperature. CdMoS4 experiences tribochemical reaction during friction process, and the high valence Mo was deoxidized by S with the formation of MoS2, so the friction coefficient decreases.
| Original language | English |
|---|---|
| Pages (from-to) | 367-371 |
| Number of pages | 5 |
| Journal | Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research |
| Volume | 15 |
| Issue number | 3 |
| State | Published - Jun 2001 |
| Externally published | Yes |
Keywords
- Cadmium tetrathiomolybdate (CdMoS)
- High temperature lubricity