Influence of Duty Cycle on the Phosphorus Content and Hardness of the Ni-P Coatings Produced by Pulse-Current Electroplating

Panya Wintachai; Nujira Kothanamn; Komsak Harachai; Napat Triroj; Papot Jaroenapibal

doi:10.4028/p-i5aOlN

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HomeSolid State PhenomenaSolid State Phenomena Vol. 356Influence of Duty Cycle on the Phosphorus Content...

Influence of Duty Cycle on the Phosphorus Content and Hardness of the Ni-P Coatings Produced by Pulse-Current Electroplating

Abstract:

Ni-P coatings were prepared on low carbon steel substrates using the pulse electrodeposition method. The influence of the pulse duty cycle on the phosphorus content and hardness of the Ni-P coatings was investigated. Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) were employed to examine the surface morphology and chemical composition of the Ni-P coating layers. The results showed that an increased pulse duty cycle (20% - 80%) led to a decreased phosphorus content from 17.81 wt.% to 13.71 wt.%. The microhardness values were found to have an inverse relationship with the phosphorus content. The highest hardness of 538.22 ± 12.92 HV_0.1 was obtained from the sample produced with a duty cycle of 80%, which had the lowest P content of 13.71 wt.%.

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Periodical:

Solid State Phenomena (Volume 356)

Pages:

69-73

DOI:

https://doi.org/10.4028/p-i5aOlN

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Online since:

March 2024

Authors:

Panya Wintachai, Nujira Kothanamn, Komsak Harachai, Napat Triroj, Papot Jaroenapibal*

Keywords:

Hardness, Ni-P Coatings, Phosphorus Content, Pulse Electrodeposition

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