Nickel(II) methanesulphonate solution 100 g/l Ni

Catalog Number	ACEP55136384
CAS Number	55136-38-4
Structure
Molecular Formula	Ni(CH3SO3)2
Concentration	100 g/l Ni

Case Study

Electrodeposition of Ni-P Alloys from Nickel Methanesulfonate Electrolyte: Characterization and Experimental Conditions

Sknar, Yu E., O. O. Savchuk, and I. V. Sknar. Applied Surface Science 423 (2017): 340-348.

This study explores the characteristics of electrodeposition of Ni-P alloys from a nickel methanesulfonate electrolyte, with a focus on the effects of sodium hypophosphite concentration and electrolyte pH on the composition and properties of the deposits. The electroplating process results in uniform, smooth, and adherent Ni-P coatings with varying phosphorus content depending on the bath composition and operating conditions. The phosphorus content increases with a higher concentration of sodium hypophosphite and a lower current density, resulting in a refined microstructure with closely packed small grains.
The deposits exhibited enhanced hardness and internal stresses, which increased with sodium hypophosphite concentration. The nickel methanesulfonate electrolyte, though producing lower phosphorus content compared to a sulfate bath, yielded coatings with superior gloss, hardness, and internal stresses. These improvements are attributed to the incorporation of nickel hydroxide during electrolysis, which distorts the deposit structure and improves its physical-mechanical properties.
Experimental Procedure:
Electrolyte Preparation: A nickel methanesulfonate bath was prepared by dissolving nickel methanesulfonate and sodium hypophosphite to achieve a concentration range of 0.03-0.12 mol/dm³ of sodium hypophosphite.
Electroplating: The plating process was carried out in a three-electrode system with a platinum working electrode and a silver chloride reference electrode. Electrolyte pH was maintained at 3.
Plating Conditions: The experiments were conducted in galvanostatic mode with a current density of 5-10 mA/cm².
Surface Morphology Analysis: Coatings were examined using scanning electron microscopy (SEM) to assess surface morphology and grain structure.
Phosphorus Content Determination: The phosphorus content in the coatings was measured by X-ray fluorescence (XRF).
The study concludes that nickel methanesulfonate electrolytes offer an effective method for depositing high-quality Ni-P alloys with enhanced properties compared to traditional sulfate-based electrolytes.

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