tIn this paper, Ni Mo alloy coatings were deposited from bath containing sodium citrate, nickel sulphate,and sodium molybdate. Essentially, this work is divided into two mains parts: (i) the optimization onthe coatings deposition parameters and (ii) the effect of the heat treatment. Polarization curves andelectrochemical impedance spectroscopy were acquired using potentiostat/galvanostat and a frequencyresponse analyzer, respectively. Morphology and chemical composition of the coatings were investigatedby scanning electron microscopy and energy dispersive spectroscopy, respectively. Polarization curves atdifferent condition revealed that electroplating at temperature 40oC, pH 9 provides a dense coating withhigh efficiency. Following the optimization of the deposition parameters, the coatings were annealed at200, 400, and 600oC for 25 min. The results showed that the coatings obtained at temperature 40oC, pH9, and annealing at 600oC has the highest corrosion resistance and microhardness.

Improvement of corrosion resistance of Ni Mo alloy coatings: Effectof heat treatment / Mousavi, Rouhollah; Bahrololooma, M. E.; Deflorian, Flavio; Ecco, Luiz Gustavo. - In: APPLIED SURFACE SCIENCE. - ISSN 0169-4332. - STAMPA. - 2016, 364:(2016), pp. 9-14. [10.1016/j.apsusc.2015.12.041]

Improvement of corrosion resistance of Ni Mo alloy coatings: Effectof heat treatment

Mousavi, Rouhollah;Deflorian, Flavio;Ecco, Luiz Gustavo
2016-01-01

Abstract

tIn this paper, Ni Mo alloy coatings were deposited from bath containing sodium citrate, nickel sulphate,and sodium molybdate. Essentially, this work is divided into two mains parts: (i) the optimization onthe coatings deposition parameters and (ii) the effect of the heat treatment. Polarization curves andelectrochemical impedance spectroscopy were acquired using potentiostat/galvanostat and a frequencyresponse analyzer, respectively. Morphology and chemical composition of the coatings were investigatedby scanning electron microscopy and energy dispersive spectroscopy, respectively. Polarization curves atdifferent condition revealed that electroplating at temperature 40oC, pH 9 provides a dense coating withhigh efficiency. Following the optimization of the deposition parameters, the coatings were annealed at200, 400, and 600oC for 25 min. The results showed that the coatings obtained at temperature 40oC, pH9, and annealing at 600oC has the highest corrosion resistance and microhardness.
2016
Mousavi, Rouhollah; Bahrololooma, M. E.; Deflorian, Flavio; Ecco, Luiz Gustavo
Improvement of corrosion resistance of Ni Mo alloy coatings: Effectof heat treatment / Mousavi, Rouhollah; Bahrololooma, M. E.; Deflorian, Flavio; Ecco, Luiz Gustavo. - In: APPLIED SURFACE SCIENCE. - ISSN 0169-4332. - STAMPA. - 2016, 364:(2016), pp. 9-14. [10.1016/j.apsusc.2015.12.041]
File in questo prodotto:
File Dimensione Formato  
J140-ASS-16.pdf

Solo gestori archivio

Tipologia: Versione editoriale (Publisher’s layout)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 2.19 MB
Formato Adobe PDF
2.19 MB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/151886
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 27
  • ???jsp.display-item.citation.isi??? 25
social impact