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The influence of Ni and Co concentration in the electroplating bath on Ni‐Co‐W alloys properties
Author(s) -
Baldessin Caio Felipe,
de Morais Nepel Thayane Carpanedo,
de Almeida Neto Ambrósio Florêncio
Publication year - 2018
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.23076
Subject(s) - materials science , corrosion , alloy , electroplating , coating , metallurgy , crystallinity , electrochemistry , ternary operation , cobalt , polarization (electrochemistry) , nickel , amorphous solid , plating (geology) , deposition (geology) , chemical engineering , chemistry , composite material , electrode , crystallography , layer (electronics) , geophysics , computer science , engineering , programming language , geology , paleontology , sediment , biology
In this study, we evaluated the influence of nickel and cobalt concentrations in an electrochemical bath for a ternary Ni‐Co‐W coating alloy electrodeposition. The X‐ray diffraction indicated formation of amorphous coating alloys for higher Co concentration and a crystalline coating alloys for higher Ni concentration. Statistical evaluation showed a mathematical model connecting the increase of alloy deposition efficiency and the Ni and Co concentration in the electrochemical bath. Corrosion tests indicated that coating alloys with higher Ni concentration, which are crystalline alloys, showed higher polarization resistance (in NaCl 0.1 mol/L) indicating that composition can influence the corrosion resistance more than the crystallinity.