Open AccessElectrochemical Activation of Nickel Oxide Incorporated Aluminum-Zinc Alloy Matrix as an Efficient Sacrificial Anode in Marine Environments
Author(s) -
K.K. Binoj
Publication year - 2022
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2022.23593
Subject(s) - anode , galvanic anode , nickel , alloy , zinc , galvanic cell , electrochemistry , corrosion , metallurgy , nanoparticle , oxide , materials science , cathodic protection , polarization (electrochemistry) , chemical engineering , aluminium , chemistry , electrode , nanotechnology , engineering
For cathodic protection of steel, the aluminium-zinc alloy sacrificial anodes incorporated with nickeloxide nanoparticles were fabricated. The metallurgical properties of Al-Zn sacrificial anodes enhancedsubstantially through the infiltration and uniform dispersion of nickel oxide nanoparticles into anAl-Zn matrix. Such effective and uniform presence of nano nickel oxide inside the interior mass of theanodes was characterized by electrochemical techniques. The anodes showed considerably lowpolarization, steady and high active open circuit potential and substantially decreased self-corrosionduring galvanic exposure for prolonged periods. The presence of nickel oxide nanoparticles in theanode matrix caused effective destruction of the passive aluminia film, which facilitated enrichmentof galvanic performance of the anode. The anode had high resistance against biofouling also.