Development of a new organic composite coating for enhancing corrosion resistance of 55% Al–Zn alloy coated steel sheet

Matsuzaki, Akira; Yamaji, Taiki; Yamashita, Masaaki

doi:10.1016/s0257-8972(03)00110-5

Cited by 15 publications

(5 citation statements)

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“…A new organic composite coating for enhancing the corrosion resistance of 55 % Al–Zn alloy‐coated steel sheets has been developed 66. The new coating is composed of an insoluble chromic compound, phosphate, organic resin, and specially developed corrosion‐preventive additives (Cr acid salt, Ca or Mg phosphoric acid salt, and basic oxide), which effect a self‐healing action in cracks generated on the surface of the steel sheet while forming.…”

Section: Self‐healing Surfacesmentioning

confidence: 99%

Self‐Repairing Coatings Containing Active Nanoreservoirs

Shchukin

Möhwald

2007

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348

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Nanocontainers with the ability to release encapsulated active materials in a controlled way can be employed to develop a new family of self-repairing multifunctional coatings, which possess not only passive functionality but also rapid feedback activity in response to changes in local environment. Several approaches to fabricate self-repairing coatings on plastic and metal substrates were surveyed. The release of the active materials occurs only when triggered, which prevents leakage of the active component out of the coating and increases coating durability. This Review also covers some principles and recent developments in the fabrication of nanocontainers with good compatibility with the coating components, the possibility to encapsulate and upkeep active material, and permeability properties of the shell controlled by external stimuli. Depending on the nature of the sensitive components introduced into the container shell, reversible and irreversible changes of the shell permeability can be induced by various stimuli. Different responses can be then observed varying from fine effects like tunable permeability to more drastic ones like total rupture of the container shell.

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Section: Self‐healing Surfacesmentioning

confidence: 99%

Self‐Repairing Coatings Containing Active Nanoreservoirs

Shchukin

Möhwald

2007

Small

348

212

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“…The results showed that extremely high corrosion resistance superior to that of Cr(VI) can be obtained by adding calcium silicate to zinc phosphate. 13,14) The contributions of these two compounds to corrosion resistance were investigated quantitatively, and the mechanism responsible for improvement of post-forming corrosion resistance was examined by analyzing the composition and structure of the corrosion products on the surface of formed sections after the corrosion test.…”

Section: )mentioning

confidence: 99%

Self-Healing Effect by Zinc Phosphate and Calcium Silicate Included in Organic-Inorganic Composite Coating on 55%Al-Zn Coated Steel Sheet

Matsuzaki¹,

Nagoshi²,

Noro³

et al. 2011

Mater. Trans.

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Improved corrosion resistance of steel sheets plated with zinciferous metal, and particularly 55% Al-Zn alloy coated steel sheets, has become necessary in recent years. However, 55% Al-Zn alloy coated steel sheets are susceptible to surface cracks during forming due to the hardness of the metallic coating. This research examined various non-chromate corrosion-preventive compounds for organic-inorganic composite coatings and found that a composite coating containing a mixture of Zn 3 (PO 4 ) 2 and CaSiO 3 provided the highest corrosion resistance among all the additives tested. The corrosion mechanism was investigated by post-test analysis of the specimens by SEM, AFM, TEM and EDX, revealing that an amorphous surface layer, which was approximately 30 nm thick and contained Ca, Cr, P, Si, C, and O, had newly formed on the steel surface exposed after deformation of the coating. It is presumed that Ca 2þ and HPO 4 2À were formed by dissolution of the CaO component in CaSiO 3 and hydrolysis of ZnO 3 (PO 4 ) 2 , respectively, and reacted to form an insoluble Ca-phosphoric acid compound which inhibited corrosion of the metal exposed by cracks.

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“…Currently, the application of highly elastic resin coatings on metal surfaces represents a remarkably effective approach to prevent both impact failure and corrosion in metals. Moreover, the utilization of resin coatings can significantly extend the service life of steel by more than several times [10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Phenolic Resin Coating Thickness on Mechanical Properties and Corrosion Resistance of Metal Materials

Zhang,

Yuan,

2024

Mater. Plast.

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In the realm of petrochemical and other industries, metal materials face threats such as impact and high-temperature electrochemical corrosion. Consequently, there has been significant attention towards organic coatings that effectively attenuate impact forces while simultaneously providing a barrier against corrosive agents. The thermosetting phenolic resin 2130, known for the facile curing process, exceptional thermal stability, water resistance, corrosion resistance, and superior mechanical properties post-curing, finds extensive applications in the field of coatings. To address the challenge of depositing a complete and uniform resin coating on complex workpieces, coatings with varying thicknesses on the surface of 304 stainless steel were deposited via rotary evaporation combined with long-term low-temperature drying. The relationship between coating thickness and mechanical properties, as well as corrosion resistance, was investigated and analyzed through a comprehensive approach involving mechanical testing, electrochemical analysis, and long-term service weight loss assessment. The results demonstrated that the coatings deposited on the metal surface exhibited excellent integrity and compactness. Moreover, an increase in coating thickness led to a significant reduction in material corrosion rate. The coatings exhibited excellent substrate adhesion and flexibility, thereby providing effective protection against impact on the metal substrate. The relationship between the thickness of the coating and the surface roughness was evident, while the flexibility of the coating first increased and then decreased with the increase of coating thickness. When the coating thickness was 7 μm, the maximum surface roughness of the coating measured 0.44 μm. Under these conditions, the impact toughness of the coating reached the peak, exhibiting a ductile fracture mode and showcasing superior comprehensive mechanical properties. The findings of this study will offer theoretical support for the investigation and formulation of resin coatings in subsequent industrial production.

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Development of a new organic composite coating for enhancing corrosion resistance of 55% Al–Zn alloy coated steel sheet

Cited by 15 publications

References 0 publications

Self‐Repairing Coatings Containing Active Nanoreservoirs

Self‐Repairing Coatings Containing Active Nanoreservoirs

Self-Healing Effect by Zinc Phosphate and Calcium Silicate Included in Organic-Inorganic Composite Coating on 55%Al-Zn Coated Steel Sheet

Effect of Phenolic Resin Coating Thickness on Mechanical Properties and Corrosion Resistance of Metal Materials

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