Nanostructured Cr-WS2 solid lubricant coatings prepared using magnetron sputtering
IR@NAL: CSIR-National Aerospace Laboratories, Bangalore
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| Title |
Nanostructured Cr-WS2 solid lubricant coatings prepared using magnetron sputtering
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| Creator |
Deepthi, B
Devi, Mayura Barshilia, Harish C Rajam, KS |
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| Subject |
Chemistry and Materials (General)
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| Description |
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.
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| Publisher |
Macmillan Publishers India Ltd.
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| Date |
2010
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| Type |
Conference or Workshop Item
PeerReviewed |
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| Identifier |
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.
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| Relation |
http://nal-ir.nal.res.in/9836/
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