Wear characteristics of patterned and un-patterned tetrahedral amorphous carbon film in the presence of synthetic and bio based lubricants
Document Type
Article
Publication Date
1-1-2018
Abstract
In this article, wear performance of patterned and non-patterned tetrahedral carbon thin film (ta-C) is compared in the presence of various lubricants. For this purpose, wear tests were conducted at temperatures (40 °C-125 °C) which are normally found during automotive engine operation. Wear test were conducted at 100 N load and 120 min. The results showed that bio-based lubricant show better wear performance at 40 and 80 °C compared to PAO lubricant for both laser patterned and non-patterned ta-C thin film. However, at the temperature of 125 °C, PAO showed better wear performance than palm based TMP ester. This can be because of unstable film formation at higher temperatures in case of bio-based lubricant. It was also found that patterned ta-C thin films shows higher wear resistance than non-patterned thin film. This can be because of micro pores which can provide lubricant, capture micro and nano wear particle and behave as micro hydrodynamic bearings.
Keywords
DLC coatings, palm based trimethylolpropane, polyalphaolefin, Wear characteristics
Divisions
fac_eng
Funders
Ministry of Higher Education(MOHE) of Malaysia: HIR-MOHE project (UMC/HIR/MOHE/ENG/60)
Publication Title
Materials Research Express
Volume
6
Issue
3
Publisher
IOP Publishing