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Technological features of electrodeposition of Ni–P coating from pyrophosphate and citrate electrolytes
https://doi.org/10.22349/1994-6716-2025-123-3-89-96
Abstract
The paper presents a comparative study of the influence of the parameters of electrochemical deposition of Ni–P coatings on their composition and current efficiency when deposited from pyrophosphate and citrate electrolytes. It was shown that both electrolytes are suitable for depositing Ni–P coatings on complex-shaped products. A comparison of the properties of coatings of different compositions obtained from these electrolytes was carried out. To obtain harder coatings, it is advisable to use a pyrophosphate electrolyte; however, due to microcracks development in coatings with a phosphorus content of 12 wt. % or more, it is unsuitable for corrosion protection. For this purpose, it is advisable to use a citrate electrolyte, which ensures porosity of the coatings even with a phosphorus content of 12 wt. %.
About the Authors
A. V. Krasikov
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
Cand Sc.
49 Shpalernaya St, 191015 St Petersburg
M. V. Merkulova
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
49 Shpalernaya St, 191015 St Petersburg
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Review
For citations:
Krasikov A.V., Merkulova M.V. Technological features of electrodeposition of Ni–P coating from pyrophosphate and citrate electrolytes. Voprosy Materialovedeniya. 2025;(3(123)):89-96. (In Russ.) https://doi.org/10.22349/1994-6716-2025-123-3-89-96
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