Influence of aqueous sodium chloride solutions on operational properties of epoxy coatings

Kotnarowska, D.; Żabińska, Aleksandra

doi:10.17531/ein.2022.4.4

Cited by 3 publications

(2 citation statements)

References 34 publications

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“…Heating of the bed helps to accelerate the drying process by promoting the evaporation of solvents and leads to changes in the concentration due to destabilization of surfactants [19], [30].…”

Section: Discussionmentioning

confidence: 99%

A novel approach to improve reliability of aerosol jet printing process

Winnicki,

Łapa,

Świadkowski

2024

Eksploatacja i Niezawodność – Maintenance and Reliability

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Additive manufacturing is gaining interest for printing of noble metals. In this study, aerosol jet printing was applied to fabricate traces from commercial silver nanoparticle ink. A self-built three dimensional printing machine was used without or with in-line substrate heating. Subsequently, sintering was conducted by furnace or near-infrared source. Examination of the sample using scanning electron and atomic force microscopy revealed the existence of both micro- and nanoscale pores in the structure. Local open porosity, aerosol extensive spatter and wide porous overspray were key defects found in samples printed without substrate heating. All the features affect the properties and reliability of silver prints. In-line process heating increased the concentration of nanoparticles and limited defects formation. The final structure was influenced by sintering method and its time. Elongated time of sintering decreased porosity and roughness of the printed traces. Nevertheless, IR sintering provided the smoothest sample surface, and significantly improved bonding of aggregates.

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Section: Discussionmentioning

confidence: 99%

A novel approach to improve reliability of aerosol jet printing process

Winnicki,

Łapa,

Świadkowski

2024

Eksploatacja i Niezawodność – Maintenance and Reliability

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“…In general, as the samples were removed from the immersion medium, their surfaces showed a noticeable increase in roughness. According to Yee et al [60], this could be clarified by the development of irregularly shaped pits due to exposure to the saline environment for the uncoated substrates and by the chipping of the top layer of the coatings caused by exposure to aggressive conditions, resulting in changes in the surface roughness profile for the coated substrates [61].…”

Section: Afm Analysismentioning

confidence: 99%

Chitosan-Based Sustainable Coatings for Corrosion Inhibition of Aluminum in Seawater

Aguilar-Ruiz,

Dévora-Isiordia,

Sánchez-Duarte

et al. 2023

Coatings

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Metals are widely used in various industrial applications due to their advantageous properties, but they often exhibit signs of degradation over time because of prolonged exposure to environmental conditions. To prevent corrosion, coatings have gained popularity owing to their practicality in maintaining the original shape and dimensions of the object being protected. Nevertheless, traditional coatings may pose significant toxicological and environmental concerns, leading researchers to explore eco-friendly alternatives such as chitosan-based coatings. Chitosan, a biopolymer derived from chitin, is abundant in nature and has been extensively studied for its physicochemical properties, including its potential in the development of new materials. Chitosan-based coatings have shown promise as effective corrosion inhibitors, and this study aims to develop a crosslinked chitosan-based coating from shrimp waste as an alternative to expensive, commercial coatings. Chitosan, and chemically modified polyethylene glycol, polyvinylpyrrolidone, and ammonium paratungstate chitosan coatings of high- and medium molecular weight prepared by the sol-gel technique, were used for the study of corrosion protection of aluminum in 3.5% synthetic seawater. The molecular interactions and structural alterations following cross-linking of chitosan-based coatings was supported by FTIR-ATR. Surface morphology analysis by AFM indicated good coating adsorption on aluminum surfaces. Contact angle measurements showed hydrophilic properties with contact angles >62° and <90°. Physicochemical characterization (molecular weight (kDa), deacetylation (%), humidity (%), and ash (%)) was also carried out. The corrosion inhibition effectiveness was assessed by gravimetric tests after immersion studies, and the results highlighted the MMW-Chi-based coating’s performance.

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