Effect of incorporating carbon nanotubes into electrolyte on surface morphology of micro arc oxidized Cp-Ti

Yazici S. K., Muhaffel F., BAYDOGAN M.

APPLIED SURFACE SCIENCE, cilt.318, ss.10-14, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 318
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.apsusc.2013.11.137
  • Dergi Adı: APPLIED SURFACE SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.10-14
  • Anahtar Kelimeler: Carbon nanotube, Commercially pure titanium (Cp-Ti), Micro arc oxidation, Titanium oxide, CORROSION-RESISTANCE, TITANIUM-ALLOYS, MECHANICAL-PROPERTIES, PHYSICAL-PROPERTIES, OXIDATION, COATINGS, MICROSTRUCTURE, HYDROXYAPATITE, COMPOSITES, SUBSTRATE
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

In the present study, effect of carbon nanotubes (CNTs), as electrolyte additives in the micro arc oxidation (MAO) process, on surface morphology of commercially pure titanium (Cp-Ti) was investigated. MAO process was carried out under constant bipolar voltage pulses using two different positive and negative voltage combinations. Results showed that CNTs were successfully incorporated into the coating surface especially within the pores generated by the discharge channels during the MAO process as confirmed by SEM examinations. As the applied voltage and CNTs concentration in the electrolyte were increased, size of micro pores on the surface also increased and their numbers decreased. Higher amount of CNTs addition in the electrolyte resulted in a corresponding decrement in the coating thickness after the MAO process. (C) 2013 Elsevier B.V. All rights reserved.