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TRIBOLOGICAL PROPERTIES OF TiO2/SiO2 DOUBLE LAYER COATINGS DEPOSITED ON CP-Ti

Author

Listed:
  • O. ÇOMAKLI

    (Department of Mechanical Engineering, Ataturk University, Erzurum, Turkey)

  • M. YAZICI

    (#x2020;High Technology Research Centre, Erzurum Technical University, Erzurum, Turkey)

  • T. YETIM

    (#x2021;Department of Chemical Engineering, Erzurum Technical University, Erzurum, Turkey)

  • A. F. YETIM

    (#xA7;Department of Mechanical Engineering, Erzurum Technical University, Erzurum, Turkey)

  • A. ÇELIK

    (Department of Mechanical Engineering, Ataturk University, Erzurum, Turkey)

Abstract

In the present paper, the influences of different double layer on wear and scratch performances of commercially pure Titanium (CP-Ti) were investigated. TiO2/SiO2 and SiO2/TiO2 double layer coatings were deposited on CP-Ti by sol–gel dip coating process and calcined at 750∘C. The phase structure, cross-sectional morphology, composition, wear track morphologies, adhesion properties, hardness and roughness of uncoated and coated samples were characterized with X-ray diffraction, scanning electron microscopy (SEM), nano-indentation technique, scratch tester and 3D profilometer. Also, the tribological performances of all samples were investigated by a pin-on-disc tribo-tester against Al2O3 ball. Results showed that hardness, elastic modulus and adhesion resistance of double layer coated samples were higher than untreated CP-Ti. It was found that these properties of TiO2/SiO2 double layer coatings have higher than SiO2/TiO2 double layer coating. Additionally, the lowest friction coefficient and wear rates were obtained from TiO2/SiO2 double layer coatings. Therefore, it was seen that phase structure, hardness and film adhesion are important factors on the tribological properties of double layer coatings.

Suggested Citation

  • O. Çomakli & M. Yazici & T. Yetim & A. F. Yetim & A. Çelik, 2017. "TRIBOLOGICAL PROPERTIES OF TiO2/SiO2 DOUBLE LAYER COATINGS DEPOSITED ON CP-Ti," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 24(06), pages 1-7, August.
    • Handle: RePEc:wsi:srlxxx:v:24:y:2017:i:06:n:s0218625x17500822
    DOI: 10.1142/S0218625X17500822
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