Optimization of phosphate coating properties on steel sheet for superior paint performance

Rani, Nitu; Singh, Aniket; Alam, Sarfaraz; Bandyopadhyay, N.; Denys, M.

doi:10.1007/s11998-012-9395-9

Cited by 22 publications

(12 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Niu et al 37 prepared a modified zinc-phosphate primer using a complex of accelerators and observed a superior paint-metal adhesion for a magnesium substrate. Nitu et al 38 conducted a systematic study on optimization of zinc-phosphate coating for superior paint-primer adhesion. Their study is of significant importance as they suggested the most suitable conditions required for phosphate coating for the best paint adhesion to steel substrate.…”

Section: Characteristics and Performance Of Phosphate Coatingsmentioning

confidence: 99%

Anticorrosive interfacial coatings for metallic substrates

Rahimi¹,

Potrekar²,

Dutta³

et al. 2013

Surface Innovations

View full text Add to dashboard Cite

The present state-of-the-art in anticorrosive coatings technology is a multistep process where multilayered hybrid coatings are applied on metallic substrates with each layer having certain functionality and properties. These layers are mainly an interfacial layer, such as inorganic phosphate coatings and/or sol-gel hybrid coatings, which are accompanied by a paint/polymer topcoat. While the main characteristic of the polymer topcoat is a "barrier" role to prevent the diffusion of corrosive species to the metal surface, the primer or the first layer in contact with metal surface is of significant importance due to its role in "active" corrosion prevention capability and promotion of strong adhesion between the substrate surface and subsequent layers. In this article, recent developments in processing and functional properties of zinc-phosphate sacrificial primers and sol-gel-based hybrid coatings will be overviewed. Finally, some of the innovative advancements in this area developed by this research group and others will also be discussed.

show abstract

Section: Characteristics and Performance Of Phosphate Coatingsmentioning

confidence: 99%

Anticorrosive interfacial coatings for metallic substrates

Rahimi¹,

Potrekar²,

Dutta³

et al. 2013

Surface Innovations

View full text Add to dashboard Cite

show abstract

“…Unfortunately, durability of this coating is also time-restrained, and its regular renewing is necessary [ 6 , 7 ]. Identifying the moment at which the paint coating lacks its proper barrier properties and its protective properties against corrosion are reduced is crucial for economic and durability reasons [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

“…An electrolyte layer (5) with resistance R s between the electrode (3) and the coating (2) provides the conductivity of the system. Current flow is possible in the coating (2), pores (6), and damaged areas (7) due to the motion of ions (8) in moisture. Ions (8) are usually from wet external environments and water-soluble electrolytes, which are components of the coating, and from impurities left after improper cleaning of metal prior to painting (Figure 1b,c)-cf.…”

Section: Introductionmentioning

confidence: 99%

Diagnostics of Large Non-Conductive Anti-Corrosion Coatings on Steel Structures by Means of Electrochemical Impedance Spectroscopy

Jaśniok

Skórkowski

2021

Materials

View full text Add to dashboard Cite

This paper proposes a testing methodology for barrier properties of large non-conductive anti-corrosion coatings on steel structures. Electrochemical impedance spectroscopy (EIS) was adapted to in situ testing of steel structures by using a prototypical flexible measuring probe and a gel electrolyte that filled the probe, to take measurements on any surface regardless of its position. The first stage of the testing methodology was to perform time-consuming impedance measurements and quick electromagnetic measurements of coating thickness at selected test points. The results were used to determine correlation relationships between the logarithm of the impedance modulus for the coating at a measuring frequency of 0.1 Hz measured with the EIS method and the average thickness of the coating measured with an electromagnetic thickness gauge. Quick electromagnetic measurements were performed in the second stage to specify thickness of the other surface of the steel structure coating. The barrier properties of this coating were identified on the basis of the determined correlation.

show abstract

“…The alkaline environment destroys the epoxy component of the coating and the metal surface, as well as decreasing the adhesion force (Kim and Chai 2018;Kendig et al 1990;Fürbeth and Stratmann 2001). Cathodic polarization potential, pigmentation, filler and surface treatment conditions all have effects on the cathodic disbondment of the coating (Yao et al 2014;Nikravesh et al 2011;Naderi and Attar 2010;Rani et al 2012;Mahdavian and Ashhari 2010). Some researchers believe that the increase in the pH in the cathode region can cause the cathode of the base metal oxide bonded to the anti-corrosion layer to be peeled off, and at the same time, the anti-corrosion layer of the pipeline is dissolved, or the adhesion between polymer and metal is lowered, thereby the corrosion layer produces cathodic disbondment.…”

Section: Introductionmentioning

confidence: 99%

Effects of direct stray current on the performance of cathodic disbonding epoxy powder coatings

Cui

Wang

et al. 2019

Pet. Sci.

View full text Add to dashboard Cite

The influence of the direction and magnitude of direct (DC) stray current on the disbonding performance of epoxy powder coating was studied by using electrochemical impedance spectroscopy and scanning electron microscopy technology. The results show that the application of DC stray current could accelerate the anodic dissolution. The peeling degree of the coating increases as the magnitude of positive DC stray current interference increases in the range of 2-8 V. With 16 V positive stray current disturbance, the degree of coating disbonding decreases. With the application of negative stray current, the coating peeling becomes more serious, and the degree of peeling increases as the DC stray current increases.

show abstract

Optimization of phosphate coating properties on steel sheet for superior paint performance

Cited by 22 publications

References 16 publications

Anticorrosive interfacial coatings for metallic substrates

Anticorrosive interfacial coatings for metallic substrates

Diagnostics of Large Non-Conductive Anti-Corrosion Coatings on Steel Structures by Means of Electrochemical Impedance Spectroscopy

Effects of direct stray current on the performance of cathodic disbonding epoxy powder coatings

Contact Info

Product

Resources

About