Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 718, Issue -, Pages 126-133Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.05.125
Keywords
Cp Ti; Micro arc oxidation; Plasma nitriding; Tribological behavior; Corrosion property
Categories
Funding
- National Natural Science Foundation of China [51371097]
- six talent peaks project of Jiangsu province [YPC16005-PT]
- priority academic program development of Jiangsu higher education institutions
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The TiO2/graphite coatings were fabricated by micro arc oxidation (MAO) process combined with or without plasma nitriding to improve the tribological and anti-corrosion performances of the Cp Ti. The microstructure and composition of the coatings were characterized by scanning electron microscopy (SEM), X-ray diffractometer (XRD), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS), respectively. The tribological and corrosion behaviors were evaluated by the friction test and electro-chemical test, respectively. Results show that the nitrided TiO2/graphite coating exhibits relatively smooth surface with less porous structure. Its friction coefficient, wear rate under dry sliding condition and corrosion current density in artificial seawater are lower, compared to those of the TiO2/graphite coating, indicating that it has perfect tribological property and corrosion resistance. (C) 2017 Elsevier B.V. All rights reserved.
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