Enhancement of adhesion and corrosion resistance of diamond-like carbon thin films on Ti
By Santu Bhattacherjee and Hamid Niakan and Qiaoqin Yang and Yongfeng Hu and James Dynes
Published in Surface and Coatings Technology
NULL
2015
Abstract
Pure diamond-like-carbon (DLC) and nitrogenated diamond-like-carbon (N-DLC) were deposited by Ion Beam Deposition using a low energy End-Hall Source on titanium and silicon substrates. The beam energy used during the deposition had a mean value of 65 eV. The structure and composition of the films were investigated by visible Raman Spectroscopy and X-ray Absorption Spectroscopy (XAS). Hardness and Young's modulus of the coatings were measured by nanoindentation. Adhesion of the coatings to the substrates was measured by Rockwell C indentation tests. To investigate the corrosion property of the coatings, Tafel polarization tests were performed from ? 1.5 V to 1.5 V in 0.89% NaCl solution using the Standard Calomel Electrode as a reference. In our studies, \DLC\ deposited directly on bare titanium alloy (Ti
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