Deepthi, B and Devi, Mayura and Barshilia, Harish C and Rajam, KS (2010) Nanostructured Cr-WS2 solid lubricant coatings prepared using magnetron sputtering. In: International Conference on Nanomaterials and Nanotechnology, KS Rangasamy College of Technology, Tiruchengode.
Full text not available from this repository.Abstract
Cr-WS2 nanocomposite coatings were deposited at different Cr contents (15-50 at.%) using an unbalanced magnetron sputtering system. Various techniques were used to study the structure, chemical composition, mechanical and tribological properties of the coatings. X-ray diffraction results of Cr-WS2 coatings indicated structural transition from a mixture of nanocrystalline and amorphous phases to a complete amorphous phase with an increase in the Cr content. Cross-sectional high resolution transmission electron microscopy studies revealed that Cr-WS2 coatings prepared at low Cr contents ( 23 at.%) exhibited a mixture of nanocrystalline and amorphous phases. Nanoindentation results indicated that addition of Cr helped in improving the mechanical properties of Cr-WS2 coatings. Microtribometer tests indicated that Cr-WS2 coatings prepared at low Cr contents ( 23 at.%) exhibited superior tribological properties at ambient conditions compared to WS2 coatings, both at low (2 N) and high (7 N) loads.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjects: | CHEMISTRY AND MATERIALS > Chemistry and Materials (General) |
| Depositing User: | Mr N Selvakumar |
| Date Deposited: | 29 Aug 2011 05:26 |
| Last Modified: | 29 Aug 2011 05:26 |
| URI: | http://nal-ir.nal.res.in/id/eprint/9836 |
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