NDLI: Electrodeposited nickel–phosphorous (Ni–P) alloy coating: an in-depth study of its preparation, properties, and structural transitions

Content Provider	Springer Nature Link
Author	Pillai, Anju M. Rajendra, A. Sharma, A. K.
Copyright Year	2012
Abstract	Ni–P deposits with a phosphorous content of up to 20% (wt) were obtained on AA6061 substrates by direct current electrodeposition technique from a solution containing nickel sulfate, nickel chloride, phosphorous acid, phosphoric acid, and a wetting agent (sodium lauryl sulfate). The effect of various plating parameters like current density, concentration of phosphorous acid, concentration of phosphoric acid and plating temperature on the P content of the coating as well as the rate of deposition was investigated systematically. It has been observed that the influence of current density on the P content of the deposit is largely dependent on the concentration of phosphorous acid in the plating bath. Composition, surface morphology, microstructure, and mechanical properties of the Ni–P deposits were studied using SEM, EDAX, XRD, and nanoindentation techniques. Ni–P electrodeposits with low P content in the range of 4–7 wt% of P exhibited superior microhardness of 7.74–8.57 GPa. With increasing P content in the deposit, the structure undergoes transition from crystalline to nanocrystalline and becomes amorphous above 9.14 wt% of P. Ni–P alloys with some selected compositions were subjected to heat treatment at 400°C for 1 h in a hot air oven and the resulting variation in mechanical properties was studied using nanoindentation technique.
Starting Page	785
Ending Page	797
Page Count	13
File Format	PDF
ISSN	15470091
Journal	JCT Research
Volume Number	9
Issue Number	6
e-ISSN	19353804
Language	English
Publisher	Springer US
Publisher Date	2012-04-19
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Electrodeposition Nickel–phosphorous alloy Microstructure Nanoindentation Heat treatment Materials Science Industrial Chemistry/Chemical Engineering Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings Polymer Sciences
Content Type	Text
Resource Type	Article
Subject	Chemistry Surfaces, Coatings and Films Colloid and Surface Chemistry Surfaces and Interfaces

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