Title: Adhesion and Composite Micro-hardness of DLC and Si-DLC films Deposited on Nitrile Rubber
Authors:

M. Lubwama, K.A. McDonnell, J.B. Kirabira, A. Sebbit, K. Sayers, D. Dowling, B. Corcoran

Keywords: Adhesion; Closed field unbalanced magnetron sputtering ion plating; DLC; Micro-hardness; Si-DLC; Tribology
Issue Date: 2012
Abstract: Thin films of hydrogenated diamond-like carbon (DLC) and silicon (Si) doped diamond-like carbon (Si-DLC) have been deposited on acrylonitrile butadiene rubber (NBR) using a closed field unbalanced magnetron sputtering ion plating system. A sputter cleaning process was integrated into the deposition process so as to reduce the likelihood of re-contamination between the cleaning and deposition stages. The deposited coatings showed excellent adherence with an adhesion rating of 4 A for films with a Si-C interlayer. The composite micro-hardness was highest for DLC films at 15.5 GPa for indentation load of 147.1 mN using a Vickers microhardness tester. Tribological tests undertaken under normal load of 5 N using a pin-on-disc tribometer for all of the samples of DLC and Si-DLC films, with and without Si-C interlayer, show a friction increase between 0.25 and 0.4 to between 0.45 and 0.6. This friction increase has been related to the micro-hardness of the films
Published in: Surf. Coat. Technol. 206 (2012) 4881-4886

Attachments

Attachment Name Attachment Type
Adhesion and Composite Micro-hardness of DLC and Si-DLC films Deposited on Nitrile Rubber DOC PDF PS
Adhesion and Composite Micro-hardness of DLC and Si-DLC films Deposited on Nitrile Rubber