Wear characteristics of patterned and un-patterned tetrahedral amorphous carbon film in the presence of synthetic and bio based lubricants

• Published in: Materials research express 2019-03, Vol.6 (3), p.36414
• Main Authors: Arslan, A, Quazi, M M, Masjuki, H H, Kalam, M A, Varman, M, Zulkifli, N W M, Jamshaid, M, Mandalan, S M, Gohar, G A, Gulzar, M, Alwi, Azham, Yarmand, Hooman, Mustafa, M S
• Format: Article
• Language: English
• Subjects: DLC coatings; palm based trimethylolpropane; polyalphaolefin; wear characteristics
• ISSN: 2053-1591; 2053-1591
• DOI: 10.1088/2053-1591/aaf74d

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.