Vishnu Shankar, D (2022) Formation of discrete periodic nanolayered coatings through tailoring of nanointerfaces—Toward zero macroscale wear. APPLIED SCIENCES AND ENGINEERING. pp. 1-19.

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Abstract

Notwithstanding the success of nanolayered coatings in the reduction of wear at nano-/microscales, the improvement
of the wear resistance at the macroscale remains an issue. Moreover, the effects of nanointerfaces in nanolayered
coatings on their macrotribological properties are not understood well. This paper reports on the engineering of
nanointerfaces in diamond-like C/Cr nanolayered coatings to tailor their characteristics including the degree of
intermixing, defects, and Cr growth mode. The result was the fabrication of a coating with subnanometer-thick
periodic albeit discrete Cr interlayers. This was achieved using our patented deposition technique. This coating
contained less interfacial defects compared to classic nanolayered coatings with continuous nanolayers and
presented record-breaking wear rates at the macroscale. Finite Element analysis was performed and micropatterning
strategy was used to reduce the wear rate further. Last, we report on discovery of a dimensionless parameter that
can be used to predict the wear resistance of carbon-based nanolayered coatings

Item Type: Article
Divisions: PSG College of Arts and Science > Department of Physics
Depositing User: Mr Team Mosys
Date Deposited: 22 Jun 2022 09:05
Last Modified: 22 Jun 2022 09:05
URI: http://ir.psgcas.ac.in/id/eprint/1248

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