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

EFEOĞLU İ., KELEŞ A., TOTİK Y., Cicek H., Sukuroglu E. E.

9th International Conference on Tribology (Balkantrib), Türkiye, 13 - 15 Eylül 2017, cilt.295 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 295
  • Doi Numarası: 10.1088/1757-899x/295/1/012005
  • Basıldığı Ülke: Türkiye
  • Anahtar Kelimeler: Magnetron sputtering, Ti:Ta-DLC, friction, wear, CARBON-FILMS, DOPED DLC, COATINGS, RATIO
  • Atatürk Üniversitesi Adresli: Evet

Özet

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/N-2/C2H2 atmosphere. 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 (sp(3)) and C=C (sp(2)) were obtained with XPS. The tribological properties of Ti: Ta-DLC were investigated with pin-ondisc 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 (mu approximate to 0.02) and high wear resistance (0.5E-6 mm(3)/Nm).