Evaluation of Corrosion Resistance in 3.5% NaCl Solution of Hybrid Coatings Obtained from Plastics Materials

Abstract

In this work, the corrosion resistance of hybrid coatings obtained from plastic materials was evaluated and compared with the corrosion resistance of Zn coatings. Zinc and hybrid coatings were obtained by electrodeposition from zinc sulphate electrolyte. For obtained hybrid coatings it was used as disperse phase two type of plastic materials: phenol-formaldehyde resin and epoxy resin. Polarization was used to measure the corrosion rate and behaviour of zinc and hybrid coatings in 3.5% NaCl solution. Tafel curves show that the including particles of plastic materials in zinc matrix disturbs the cathodic reactions and reduces anodic reaction leading to decrease of corrosion current and increase the corrosion resistance of hybrid coatings obtained at the same electrodeposition parameters as zinc coatings. Smallest values of corrosion rate were evaluated for hybrid coatings obtained with phenol-formaldehyde resin as disperse phase that indicates a good corrosion resistance in 3.5% NaCl solution.

Reactivity and Corrosion Behaviors of Ti6Al4V Alloy Implant Biomaterial under Metabolic Perturbation Conditions in Physiological Solutions

“…Reactivity and corrosion of biomaterials are complex processes and their effects are very important because they could cause various pathological diseases or trauma in the biomedical field. These phenomena consist of the partial or complete destruction of metallic implants, caused by chemical, electrochemical, or biochemical reactions that take place between the metallic implants and certain factors from the body’s environment [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ].…”

“…The presence of saliva, bacteria, and their subproducts, as well as the wear and onset of corrosion of the metal parts within the implant–abutment connection can lead to biological (mucositis and/or peri-implantitis) and mechanical (corrosion, screw loosening, fracture, and/or fatigue) implant failures. Saliva also plays an important role in the corrosion of dental implants [ 6 , 7 , 9 , 10 , 11 , 12 , 13 ]. The dental implant’s surface is constantly exposed to saliva via the gingival sulcus.…”

The Effect of Mechanical Pretreatment on the Electrochemical Characteristics of PEO Coatings Prepared on Magnesium Alloy AZ80

“…The great significance of biodegradable alloys and powders is given to plasma spraying and also electrodeposition. These techniques allow for the formation of protective coatings on the surface [ 7 , 8 ]. Coatings can ensure the protection of the material surface by providing a protective boundary between the metal and the aggressive environment.…”