Tribological Behaviour of Ti:Ta-DLC Films Under Different Tribo-Test Conditions

9th International Conference on Tribology

Efeoglu, hsan^1 ; Kele, Ayenur^1 ; Totik, Yaar^1 ; Cicek, Hikmet^2 ; Süküroglu, Ebru Emine^3

Atatürk University, Faculty of Engineering, Erzurum, Turkey^1

Erzurum Technical University, Faculty of Engineering, Erzurum, Turkey^2

Gümühane University, Faculty of Engineering, Gümühane, Turkey^3

关键词: Closed field unbalanced magnetron sputtering systems;    Dense columnar microstructure;    Friction and wear properties;    Hydrogenated DLC films;    Low friction coefficients;    Tribological behaviour;    Tribological properties;    X-ray diffraction techniques;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/295/1/012005/pdf
DOI  :  10.1088/1757-899X/295/1/012005

来源: IOP

【 摘 要 】

Diamond-like carbon (DLC) films are suitable applicants for cutting tools due to their high hardness, low friction coefficient and wear rate. Doping metals in DLC films have been improved its tribological properties. In this study, titanium and tantalum doped hydrogenated DLC films were deposited by closed-field unbalanced magnetron sputtering system onto M2 high speed steels in Ar/N2/C2H2atmosphere. The friction and wear properties of Ti:Ta-DLC film were investigated under different tribo-test conditions including in atmospheric pressure, distilled water, commercial oil and Ar atmosphere. The coated specimens were characterized by SEM and X-ray diffraction techniques. The bonding state of C-C (sp3) and C=C (sp2) were obtained with XPS. The tribological properties of Ti:Ta-DLC were investigated with pin-on-disc wear test. Hardness measurements performed by micro-indentation. Our results suggest that Ti:Ta-doped DLC film shows very dense columnar microstructure, high hardness (38.2 GPa) with low CoF (μ ≈0.02) and high wear resistance (0.5E-6 mm3/Nm).