STRUCTURAL PROPERTY COMPARISON OF NEW AND USED DIAMOND-LIKE CARBON/TITANIUM DOUBLE-LAYER FILMS

Wichai  Kongsri; Ekachai  Chongsereecharoen; Thanun  Chunjaemsri; Piyaporn  Thangdee; Warintorn  Chatarat; Chanan  Euaruksakul; Rattikorn  Yimnirun; Saroj  Rujirawat

Authors

Wichai Kongsri Faculty of Science and Technology, Valaya Alongkorn Rajabhat University, Klong Luang, Pathumthani, Thailand.
Ekachai Chongsereecharoen Reaserch Network NANOTEC-SUT on Advanced Nanomaterials and Characterization, School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand.
Thanun Chunjaemsri Reaserch Network NANOTEC-SUT on Advanced Nanomaterials and Characterization, School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand.
Piyaporn Thangdee Reaserch Network NANOTEC-SUT on Advanced Nanomaterials and Characterization, School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand.
Warintorn Chatarat Reaserch Network NANOTEC-SUT on Advanced Nanomaterials and Characterization, School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand.
Chanan Euaruksakul Synchrotron Light Research Institute (Public Organization), Nakhon Ratchasima, Thailand.
Rattikorn Yimnirun Research Network of NANOTEC-VISTEC on Nanotechnology for Energy and School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong, Thailand.
Saroj Rujirawat Synchrotron Light Research Institute (Public Organization), Nakhon Ratchasima, Thailand.

Keywords:

DLC films, NEXAFS, XPS, Raman spectroscopy

Abstract

Diamond-like carbon (DLC) based films are usually applied to devices as protective coating in devices demanding excellent mechanical properties in order to improve tribological performances. In this work, DLC/Ti double-layer thin films were deposited on a moving part of Heads Gimbal Assembly (HGA) tester and were put in the operation for 1000 h. Comparison of structural properties of the newly deposited and after full operation samples was investigated. Surface morphology was examined by scanning electron microscopy (SEM). X-ray photoelectron spectroscopy (XPS) was used for examining chemical composition of films. Moreover, the structural properties were studied by near edge X-ray absorption fine structure (NEXAFS) spectroscopy and Raman spectroscopy. The results show a good tribological performance of the film as there was no significant difference between the new and used sample.

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