EFFECT OF BATH pH ON ELECTROLESSNi–PCOATING DEPOSITED ON OPEN-CELL ALUMINUM FOAMS

Jiaan Liu (), Fujian Si, Dong Li, Yan Liu, Zheng Cao and Guoyong Wang
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Jiaan Liu: Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130022, P. R. China
Fujian Si: Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130022, P. R. China
Dong Li: Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130022, P. R. China
Yan Liu: Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun 130022, P. R. China
Zheng Cao: Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130022, P. R. China
Guoyong Wang: Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130022, P. R. China

Surface Review and Letters (SRL), 2015, vol. 22, issue 06, 1-12

Abstract: Different electrolessNi–Pcoatings were deposited on open-cell aluminum foams at various bath pH. The effect of bath pH on the morphology, structure, components, phases and corrosion resistance of theNi–Pcoating was studied by scanning electron microscopy (SEM), confocal laser scanning microscope (CLSM), energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD), immersion test and electrochemical polarization measurement, respectively. The experimental results show that the bath pH not only changed the reactivity of the bath, but also had a influence on the microstructure and anticorrosive property of electrolessNi–Pcoating. The high pH bath raises the thickness ofNi–Pcoating but decreases the content of phosphorus element in theNi–Pcoating. The corrosion resistance of the coated aluminum foams increases when the bath pH rises.

Keywords: Alfoams; electroless; Ni–Pcoating; bath pH; corrosion resistance (search for similar items in EconPapers)
Date: 2015
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DOI: 10.1142/S0218625X15500766

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