表面活性剂的制备和表征镀Ni-P-CNT复合涂层.pdfVIP

Journal of Alloys and Compounds 509 (2011) 1836–1840 Contents lists available at ScienceDirect Journal of Alloys and Compounds j o u rn al h omepage: w w w. elsev /locate/jallcom Effect of surfactant on the fabrication and characterization of Ni-P-CNT composite coatings Arman Zarebidaki, Saeed-Reza Allahkaram ∗ School of Metallurgy and Materials Engineering, University College of Engineering, University of Tehran, Tehran 11155-4563, Iran a r t i c l e i n f o a b s t r a c t Article history: In order to disperse carbon nano-tubes in electroless Ni-P coatings different surfactants (sodium dode- Received 26 August 2010 cyl sulfate (SDS) as anionic surfactant and Hexadecyl Trimethylammonium Bromide (HTAB) as cationic Received in revised form 4 October 2010 surfactant) were added to the electroless bath and their respective dispersing power was monitored Accepted 10 October 2010 by using ultra violet visible (UV–vis) spectroscopy method. Then Ni-P-CNT coating deposited, using Available online 21 October 2010 optimum surfactant-to-CNTs ratio of proper surfactant. The morphologies of composite coatings were analyzed using a scanning electron microscope (SEM). Moreover, hardness and corrosion resistance of Keywords: the applied composite coatings were measured via microhardness, polarization and electrochemical Electroless Ni-P Nano-composite coating impedance spectroscopy (EIS) methods. R