The effects of surface roughness of stainless steel 316L substrates on the characteristics of electrophoretically deposited HA/chitosan coatings

The roughness, adhesion, and other qualities of hydroxyapatite (HA) coatings are determined by how well the metal surface is prepared before the coating. In this study, Electrophoretic deposition (EPD) on various substrate roughnesses (320 and 800 grit SiC grind, and sandblasted surfaces) was used t...

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Bibliographic Details
Main Authors: Jasim, Fatima Naoum, Arbilei, Marwan Nafea, Aljubouri, Ali Abadi
Format: Conference Proceeding
Language:English
Subjects:
Adhesion
Adhesive bonding
Austenitic stainless steels
Chitosan
Coatings
Contact angle
Electrophoretic deposition
Hydroxyapatite
Metal surfaces
Microscopy
Morphology
Substrates
Surface roughness
Surface roughness effects
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Summary:The roughness, adhesion, and other qualities of hydroxyapatite (HA) coatings are determined by how well the metal surface is prepared before the coating. In this study, Electrophoretic deposition (EPD) on various substrate roughnesses (320 and 800 grit SiC grind, and sandblasted surfaces) was used to produce HA/chitosan coatings on 316L stainless steel substrates, their properties and morphology were investigated. The coating’s morphology was examined by using scanning electron microscopy (SEM), atomic force microscopy (AFM) was used to analyze the surface topography of coatings, and the tape test was used to measure the adhesive bonding between the applied coatings and the substrate. The results showed that the deposition of HA/chitosan coating on sandblasted 316L SS substrate has the best properties, i.e., uniformity, proper percentage of porosity, higher nanoroughness (97.1 nm), the best value of contact angle (53.778°), and highest adhesion to the substrate with a removal area of 4.6%.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0183155