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Effect of electroplating time on microstructure, corrosion and wear behaviour of Ni-P-W-TiO2 coating

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Title Effect of electroplating time on microstructure, corrosion and wear behaviour of Ni-P-W-TiO2 coating
 
Creator Sadeghi, Sajjad
Ebrahimifar, Hadi
 
Subject Ni-P-W-TiO2 coating
Electroplating time
Potentiodynamic polarization
Electrochemical impedance spectroscopy
Wear resistance
 
Description 76-84
Ni-P-W-TiO2 coating has been deposited on the AISI 304L steel substrate using the electroplating method. Electroplating
has been performed at 30, 45, and 60 min, and the effect of electroplating time on microstructure, corrosion and wear behaviour
has been investigated. The coatings have been characterized by use of scanning electron microscopy (SEM). In order to
investigate corrosion resistance, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) tests have
been used in 3.5% of NaCl aqueous solution. A pin on disk test has been used to test the wear resistance of uncoated and coated
samples. Sample micro-hardness has also been measured by the Vickers hardness test. Examination of the microstructure has
shown that the best time for deposition is 45 min. The results of potentiodynamic polarization and electrochemical impedance
spectroscopy tests are also consistent with microscopic images, and the results have shown that the coating created within
45 min has the highest corrosion resistance (7058 Ω.cm2) compared to coated sample within 30 (4142 Ω.cm2) and 60 (3059
Ω.cm2) minutes. Also, the results of the wear test and micro-hardness have shown that composite coating formed within 45
minutes has the highest wear resistance and micro-hardness (677 Vickers) compared to coated sample within 30 (257 Vickers)
and 60 (638 Vickers) minutes.
 
Date 2023-01-27T06:53:21Z
2023-01-27T06:53:21Z
2023-01
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/61296
https://doi.org/10.56042/ijct.v30i1.34758
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJCT Vol.30(1) [January 2023]