Effect of sodium sulfate on the electrochemical synthesis and microstructure of Co–Ni–P thin films
Zubar T.I. Kadyrzhanov K.K. Tishkevich D.I. Zdorovets M.V. Trukhanov S.V. Shlimas D.I. Volodina N.O. Trukhanov A.V.
October 2025Elsevier B.V.
Journal of the Indian Chemical Society
2025#102Issue 10
The purpose of this study was to identify the effect of sodium sulfate on the process of electrochemical deposition of the films based on Co–Ni-based alloy with P. A correlation was determined between the electrolyte composition, electrodeposition regimes and the film structure. The effect of sodium sulfate on the uniformity of the distribution of deposit thickness over the surface of the sample was investigated. It was established that sodium sulfate does not affect the chemical composition of the investigated films, but it changed the dissipative ability of the electrolyte. It was found that increasing the current density leads to more finely crystalline microstructure of the films. Thus, we can controllably change the microstructure in ternary magnetic films. The current efficiency and current distribution over the sample surface were determined. This will help us to understand better the technological features for production films/coatings for practical application (different current distribution over the real construction surface leads to different thickness and deviation from chemical composition). This information will be useful for optimizing the deposition parameters of magnetically hard films based on complex alloys with P and obtaining high-quality films with high deposition rates.
CoNi alloys , Electrolyte deposition , Electrolytic films , Throwing power
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Laboratory of Magnetic Films Physics, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, Minsk, 220072, Belarus
Engineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Satpayev St., Astana, 010008, Kazakhstan
Laboratory of Solid State Physics, The Institute of Nuclear Physics, Almaty, 050032, Kazakhstan
Laboratory of Magnetic Films Physics
Engineering Profile Laboratory
Laboratory of Solid State Physics
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