High performance nanostructured Cr-WS₂ solid lubricant coatings prepared on mechanically textured substrates
by B. Deepthi; Praveen Kumar; G. Srinivas; Harish C. Barshilia
International Journal of Surface Science and Engineering (IJSURFSE), Vol. 9, No. 5, 2015

Abstract: Cr-WS₂ nanocomposite solid lubricant coatings were prepared on mechanically textured stainless steel substrates. Micron-sized dimples of approximately 10-12 µm depth and 100 × 80 µm² area with uniform dimple spacing of 300 µm were created on the substrates using a knurling tool. Substrate surface texturing improved the tribological properties of Cr-WS₂ nanocomposite coatings significantly. Cr-WS₂ nanocomposite coatings prepared on textured steel substrates exhibited a friction coefficient of 0.1 after 28,800 cycles compared to coatings prepared on non-textured substrates which exhibited a friction coefficient of 0.45. The dimpled regions acted as solid lubricant reservoirs and also helped in trapping wear debris. The retention of solid lubricant material in the dimpled region was confirmed using field emission scanning electron microscopy and energy dispersive X-ray spectroscopy studies.

Online publication date: Wed, 30-Sep-2015

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Surface Science and Engineering (IJSURFSE):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com