ADSORPTION INCREASING OF NANOPARTICLES IN NI-AL2O3 NANOCOMPOSITE COATING BY CHEMICAL MODIFICATION

Publish Year: 1396
نوع سند: مقاله کنفرانسی
زبان: English
View: 553

This Paper With 6 Page And PDF Format Ready To Download

  • Certificate
  • من نویسنده این مقاله هستم

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این Paper:

شناسه ملی سند علمی:

ICOGPP04_022

تاریخ نمایه سازی: 13 شهریور 1396

Abstract:

The aim of this study is the compassion investigation of Ni-Al2O3 nanocomposite high corrosion resistance coatings. The content of alumina nanoparticles has the most important effect on these coatings. In this investigation the composition of electrolyte was modified by adding of methanol organic solvents. The concentration of alumina nanoparticles in the bath was 10gL-1. The coating were produced by pulse current and under ultrasonic agitation .After the electroplating process, the coatings cross sectioned and the amount of incorporated alumina nanoparticles and the morphology of each coating was analysed by Energy X-ray spectroscopy (EDX) coupled with an Scanning Electron Microscopy (SEM). The results showed that with increasing the methanol organic solvent to the Watts solution the zeta potential of the nanoparticles increased from -4.1mV to +24.5mV and subsequently, the content of alumina reinforcement nanoparticles increased from 4.6vol. % to 11vol. %. It has been assumed that methanol surfactant may act as a surface agent that affected the hydrated layer on the nanoparticles and it promoted the co-deposition of nano alumina particles with nickel.

Authors

Sadegh Mirzamohammadi

Faculty of Materials Science and Engineering, K.N. Toosi University of Technology, Tehran, Iran

Seyed Nader Ameli Kalkhoran

Faculty of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran

Mohammad Amin Mohammadi

Faculty of Materials Science and Engineering, K.N. Toosi University of Technology, Tehran, Iran

Hamid Khorsand

Faculty of Materials Science and Engineering, K.N. Toosi University of Technology, Tehran, Iran