2012 ©
             Publication
Journal Publication
Title of Article Hardness and tribological properties of electrodeposited Ni-P multilayer coatings fabricated through a stirring time-controlled technique 
Date of Acceptance 23 May 2022 
Journal
     Title of Journal Journal of Materials Research and Technology 
     Standard ISI 
     Institute of Journal Brazil 
     ISBN/ISSN 2238-7854 
     Volume 2022 
     Issue 19 
     Month July-August
     Year of Publication 2022 
     Page 1884-1896 
     Abstract Ni-P multilayer coatings were deposited on the surfaces of low-carbon steel by direct current electrodeposition through a stirring-time controlled technique (STT). The microstructure, hardness, friction coefficient and wear properties of the deposits were investigated. Scanning electron microscopy (SEM) in back-scattered electron mode revealed multilayer structures of Ni-P coatings fabricated by repeatedly turning the magnetic stirrer in the bath on and off. Energy dispersive X-ray spectroscopy (EDS) was employed to quantitatively compare the P content in the alternating layers. The hardness of the Ni-P multilayer coatings was found to be significantly greater than that of monolithic Ni-P coatings. A maximum hardness value of 580 ± 8.7 HV0.1 was found in the sample prepared using the on- and off-stirring periods of 8 and 15 min, respectively. This showed an increased hardness of 20.1% from that of sample prepared with the stirrer turned off. The Ni-P multilayer coatings prepared by STT also had superior wear resistance to that of monolithic Ni-P coatings. 
     Keyword Ni-P coating Electrodeposition Multilayer Tribological properties 
Author
607040012-3 Mrs. NUJIRA KOTHANAM [Main Author]
Engineering Doctoral Degree

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Level of Publication นานาชาติ 
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